A student is concerned with the amount of air pollution students are exposed to in the school’s parking lot after school. The student conducts an investigation to compare the quantity of particulate matter released from the diesel-powered buses, natural gas-powered buses, and the large and small cars as they idle waiting to pick up students. To make measurements, a small piece of white fabric is used to collect particulate matter from the tailpipe of each vehicle as it idles for five minutes. Each piece of fabric is then analyzed to measure the amount of particulate matter it collected.


(g) Identify the dependent variable in the investigation.
(h) Identify the hypothesis of the investigation.
(i) Describe a possible control group for this investigation.

Answers

Answer 1

Answer and Explanation:

The dependent variable is the amount of particulate matter emitted by each type of car. Dependent variable is one that needs to be influenced by the independent variable to happen. The types of cars are the main influencers of the particulate particles to which the research refers, which means that these particles only exist with the influence of these cars, making them dependable.

The research hypothesis is "Students are exposed to high levels of pollution in the school parking lot." A hypothesis is an assumption made by the researcher of the research. This assumption must be answered by the experiment carried out and it is related to the researcher's questions in relation to the researched subject.

Answer 2

The dependent variable in the investigation carried out by the student is

The amount of particulate matter emitted by each type of car.

What is dependent variable?

Dependent variable refers to a variable that is influenced by another variable called independent variable. The types of cars are the main variable of particulate particles which the students measures.

The hypothesis of the investigation is "students high level of exposure to pollution in the school parking lot.

The possible control group for this investigation is students high level of exposure to pollution in their home.

Learn more about dependent variable:

https://brainly.com/question/24405423


Related Questions

In a marine food chain, what roles does a fish, such as an ocean sunfish, play in the ecosystem? (Select all that apply.)
secondary consumer
primary consumer
producer
prey

Answers

The answer to this question is , it plays as a secondary consumer

Answer:

Secondary consumer

Explanation:

A machine automatically dispenses a beverage of a desired size. When set to "small," the machine dispenses varying amounts of liquid with a mean of 275\,\text{mL}275mL275, start text, m, L, end text and standard deviation of 10\,\text{mL}10mL10, start text, m, L, end text. Suppose that we take random samples of 555 of these drinks and calculate the mean amount of liquid \bar x
x
ˉ
x, with, \bar, on top in each sample. We can assume that individual drinks are independent.
Calculate the mean and standard deviation of the sampling distribution of \bar x
x
ˉ
x, with, \bar, on top.
You may round to one decimal place.

Answers

Answer:

275

4.5

Explanation:

khan

The mean amount of liquid is 275 and 4.5.

What is Sampling distribution method?

The probability distribution of a statistic that is acquired by repeated sampling of a particular population is called the sampling distribution.

It outlines a variety of potential possibilities for a statistic, such as the mean or mode of a population's mean or mode of some variable. Most of the data that academics examine are samples, not populations.

The sampling distribution of a given population is the distribution of frequencies of a range of different outcomes that could possibly occur for a statistic of a population.

Therefore, The mean amount of liquid is 275 and 4.5.

To learn more about Sampling, refer to the link:

https://brainly.com/question/13287171

#SPJ2

Between 1950 and 1990, wheat production in India in average pounds per acre more than tripled, which allowed India to meet its population’s need for food. Which of the following best explains this change?

Answers

The use of improved plant hybrids and agricultural chemicals can explain this change. It was part of the Green revolution.

What was the Green Revolution?

The Green Revolution refers to a period from the 1950s to the 1960s in which high-yield crop varieties were developed.

The development of high-yield varieties and the use of fertilizers help to suddenly increase crop yields, especially in developing countries.

The Green revolution was so impressive that the creator of new wheat-rice varieties Norman Borlaug was awarded the Nobel prize to help to alleviate hunger in the world.

Learn more about the Green Revolution here:

https://brainly.com/question/131789

mention any four things that can be known from the molecular formula of compound.​

Answers

Answer:

The basic composition of a compound can be indicated using a chemical formula. A chemical formula uses symbols from the periodic table to indicate the types of elements present in a particular compound while using subscripts to represent the number of each type of element present. Compounds can be covalent or ionic.

Four things can be known from the molecular formula of the compound sodium chloride, hydrogen dioxide, sodium bicarbonate, and carbohydrates.

What are chemical compounds?

Any substance made up of similar molecules with atoms from two or more different chemical elements is referred to as a chemical compound.

Chemical formulas can be used to describe a compound's fundamental makeup. Subscripts are used in chemical formulas to signify the number of each type of element present, whereas symbols from the periodic table are used to show the sorts of elements contained in a specific molecule. Compounds can be ionic or covalent.

Therefore, the molecular formula of the substance sodium chloride, hydrogen dioxide, sodium bicarbonate, and carbohydrates can be used to determine four things.

To learn more about chemical compounds, refer to the link:

https://brainly.com/question/12166462

#SPJ2

Explain how investments in commercial agriculture will lower the agricultural density of the population.

Answers

Investing in the agriculture sector can provide numerous benefits, including a partial shield against inflation risk, the prospect of cash flow as well as fixed asset value appreciation and several types of optionality, such as the ability to change a property's crop mix and even its fundamental use.

Which of the following is influenced only by heredity and not environmental factors? A) obesity B) diabetes C) heart disease D) muscular dystrophy

Answers

Answer:

i think d. muscular dystrophy

Explanation:

Answer:

muscle dystrophy

Explanation:

you can obtain heart disease by doing many unhealthy things such as smoking or eating random stuff you find in the street. You can become obese by eating a lot without working out and you can get diabetes by eating a lot of sugar.

Which of the following is not a major conclusion of the US Army Corps of Engineers' report on Hurricane Katrina?
A)
New Orleans' hurricane-protection measures did not function as a unified system.
Hurricane Katrina exceeded the design criteria of the flood-protection structures.
B)
C) Nothing else could have been done to avert the disaster; the damage was inevitable.
D)
The consequences of the flooding were pervasive, and more severe than those of any
previous disasters in New Orleans.
E)
Southern Louisiana is sinking faster than people had estimated before Katrina.

Answers

it’s C according to the text all of the others are true

Identify TWO geographic patterns indicated in the top automobile-producing countries in 2019.

Answers

Answer:  Over the past 30 years the U.S. auto industry has faced multiple existential ... of the geography of the industry, including the role of what are termed ... Today, there are a number of plants that can produce as many as six distinct ... is shifting from the upper Midwest to the entire central corridor of the country.

Domestic-based changes such as an increase in plants in the southwest belt and increases in investment.

What is the geographic patterns?

The geographic patterns are specific series of events that occur in a specific geographic region or area.

These represent those patterns that are related to investment and changes in the size, infrastructure, and layout of the plants of manufacturing industries.

These also relate to the location of industries such as the automobile industry along the river valley region that is around the southern state of Alabama and Mississippi

Find out more information about the geographic pattern.

brainly.com/question/9463165.

The 4 in 45 represents how many times the value of the 4 in 14

Answers

12.85 times
4/14 = 3.5
3.5*45= 12.85

What is the relationship between the temperature of stars and their brightness during the "main sequence" phase of a star's life?

Answers

These are both related to the stellar temperature. Stars 10 times as massive as the sun shine more than a thousand times as much. The mass and luminosity of a star also relate to its color. More massive stars are hotter and bluer, while less massive stars are cooler and have a reddish appearance.

( a) Preserving high-quality agricultural land is important so that countries can grow enough food to feed their populations. I tried chegg but you got to pay so if any you guys got it plz help me.

Answers

Preserving high-quality agricultural land to grow enough food to feed their populations, degradation of agricultural land should be reduced by counter powing technique.

What is high-quality agricultural land?

The high-quality agricultural land is the land which is helpful to grow the better quality food. The land which contain the soil with balance of sand silt and clay and which is well drained is called the high-quality agricultural land.

Preserving high-quality agricultural land is important so that countries can grow enough food to feed their populations.

For this, we have to find the agricultural method for following problems,

(i) Describe one agricultural practice that can lead to the degradation of agricultural land- Powing increases the soil erosion and decreases the fertility. Clearing a field to plant crops, can lead to the degradation of agricultural land.

(ii) Describe a potential solution or technique that can prevent or reduce degradation of agricultural land-Counter powing reduces the soil erosion and reduce degradation of agricultural land.

Thus, preserving high-quality agricultural land to grow enough food to feed their populations, the degradation of agricultural land should be reduced by counter powing technique.

Learn more about the agricultural land here;

https://brainly.com/question/894600

Can blind people see their dreams?​

Answers

Answer:

People who were born blind have no understanding of how to see in their waking lives, so they can't see in their dreams. But most blind people lose their sight later in life and can dream visually.  research in 2014 found that as time passes, a blind person is less likely to dream in pictures.

All the taxable income you receive is called?
Filing Status
Audit
Dependent
Gross Income

Answers

Answer:

gross income

Explanation:

*income* your getting money.

The answer to your question is: Gross income.

6. Is it possible for a Continental Polar (CP) air mass to morph into a Continental Tropical (CT)
air mass? Explain.

Answers

Answer:

Yes

Explanation:

If Continental Polar weather systems head south and interact with Maritime Thermal air currents heading north, storms can form. Spring is when hot, dry air masses develop over arid regions of the South and northwestern America. Tropical air currents on the mainland occupy a smaller space than most other air currents.

The body length of a daddy long-legs spider is about 0.000002 kilometer. Which of the following is equivalent to the length of the spider in scientific notation?

Answers

Answer:

ion kno im scared of them ho3s

Explanation:

2x10 and -6 would be the exponent

Which one of the following does not represent environments that determine personal environmental risk?
A) sun exposure
B) polluted air
contaminated water
D) ozone depletion
clean air

Answers

The answer should be D.

Ozone depletion clean air

Answer:

E

Explanation:

clean air

May someone please help me out? Please show steps.. or an explanation how you got the answer please.

Answers

itz option b Range [3,7]

Answer:3 to 7

Explanation:

Remember Trig functions can only equal to a max of 1 and a minium of -1.

So we got to evalute The minium value to the max to find our answer.

Help plsss
Put all of these star colors in order of their temperature (hottest to coolest)

-red
-blue
-blue-white
-yellow
-orange
-white

Answers

The correct order is

Blue
Blue-white
White
Yellow
Orange
Red

Hope this helps!

What is the source talking about? Is it post-war population increase?


Source: Carey McWilliams, “Watch the West Coast,” The Nation, September 1944.

A spectacular population increase has accompanied the west coast’s industrial revolution. The Portland metropolitan area showed a 31 per cent increase in population since 1940; the Seattle area shows an increase in population for the same period of 200,000; and an estimated 1,500,000 people have entered California since 1940. Since most industrial activity on the west coast is confined to the manufacture of aircraft and the construction of ships, sharp curtailment of employment is threatened in the post-war period. With a population increase of 14 per cent, California, for example, faces the problem of shifting 1,500,000 workers from war activities to civilian jobs after the war. . . .

The typical white defense migrant is a young man, twenty-five years of age or younger, married, from a small town or rural area in the Pacific Northwest, anxious to settle in the area, and primarily interested in industrial employment in the post-war period. A study made recently in the Kaiser yards in Portland indicates that only 23.6 per cent of the migrants expressed a definite intention to leave after the war; that only a very few have maintained economic ties elsewhere or have jobs to which they might return; that considerable numbers have purchased property in the area; that a majority have their families with them; and that 86 per cent must find new employment immediately after their present employment terminates.

Answers

A spectacular population increase has accompanied the west coast’s industrial revolution. The Portland metropolitan area showed a 31 per cent increase in population since 1940; the Seattle area shows an increase in population for the same period of 200,000; and an estimated 1,500,000 people have entered California since 1940. Since most industrial activity on the west coast is confined to the manufacture of aircraft and the construction of ships, sharp curtailment of employment is threatened in the post-war period. With a population increase of 14 per cent, California, for example, faces the problem of shifting 1,500,000 workers from war activities to civilian jobs after the war. . . .

The typical white defense migrant is a young man, twenty-five years of age or younger, married, from a small town or rural area in the Pacific Northwest, anxious to settle in the area, and primarily interested in industrial employment in the post-war period. A study made recently in the Kaiser yards in Portland indicates that only 23.6 per cent of the migrants expressed a definite intention to leave after the war; that only a very few have maintained economic ties elsewhere or have jobs to which they might return; that considerable numbers have purchased property in the area; that a majority have their families with them; and that 86 per cent must find new employment immediately after their present employment terminates.

The source is talking about the population increase that accompanied the industrial revolution on the west coast of the United States during World War II.

What is the source talking about?

The source is talking about the population increase that accompanied the industrial revolution on the west coast of the United States during World War II and the potential employment challenges that may arise in the post-war period due to the shift from war to civilian production.

The article highlights the significant increase in population in cities such as Portland, Seattle, and California since 1940, primarily due to the influx of defense migrants who are young, married men from small towns or rural areas in the Pacific Northwest seeking industrial employment opportunities.

The article also discusses the findings of a study conducted in the Kaiser yards in Portland, which provides insights into the economic ties and intentions of defense migrants after the war.

Learn more about the population, here:

https://brainly.com/question/27991860

#SPJ2


5. True or False:
The ego copes by using unconscious defense mechanisms.

Answers

Answer:

True

Explanation:

Answer:

It would be:

TRUE

An OCTAVE is a note that is the same note but only ____ notes higher or lower.

3

8

5

14

Answers

An OCTAVE is a note that is the same note but only 8 notes higher or lower.

Explanation:

I hope it can help you

Which type of nationalism best characterizes Fichte’s writing? Statist Ethnic Constitutional

Answers

Answer:

Johann Gottlieb Fichte (/ˈfɪxtə/;[28] German: [ˈjoːhan ˈɡɔtliːp ˈfɪçtə];[29][30][31] 19 May 1762 – 29 January 1814) was a German philosopher who became a founding figure of the philosophical movement known as German idealism, which developed from the theoretical and ethical writings of Immanuel Kant. Recently, philosophers and scholars have begun to appreciate Fichte as an important philosopher in his own right due to his original insights into the nature of self-consciousness or self-awareness.[18] Fichte was also the originator of thesis–antithesis–synthesis,[9] an idea that is often erroneously attributed to Hegel.[32] Like Descartes and Kant before him, Fichte was motivated by the problem of subjectivity and consciousness. Fichte also wrote works of political philosophy; he has a reputation as one of the fathers of German nationalism

If an orange is orange, why isn’t a lime called a green or a lemon called a yellow?​

Answers

Answer:

That's a good question but like if you really think about it there's lime-green.

Explanation:

Have a great day :)

Answer:
They named the color after the fruit, before this it was called yellow-red or red-yellow, the other colors already had names so they didn’t get named after a fruit with the corresponding color

Which statement supports the theory of natural selection?


A.All organisms produce more offspring than can survive.
B.Organisms live in harmony with one another despite limited resources.
C.Organisms with favorable traits are more likely to die.
D.Over time advantageous traits will be found in more of the population.

Answers

Answer:

D.

Explanation:

Basically survival of the fittest. (if possible, please mark me brainliest ily <3)

Can somebody please answer this question number 6:)

Answers

The answer is four if you round

The people in the U.S. came to the realization after 9/11 that TERRORISTS were amongst them with the intent to destroy their lives (both physically and in principle). Therefore, citizens look to authority to protect them: the birth of the Patriot Act. Although some feel these steps were/are drastic, don’t the people of the U.S. have the right, if not the obligation, to take actions in order to protect the greater good, even if it meant sacrificing some individual rights, in the face of the widespread and unseen terror?
If ur answer is not proper i will report and delete it, 100 points is more than worth a good response. Thank you. I will mark brainly the best answer giving you 200 points

Answers

Answer:

No

Explanation:

There is a famous theory by Kenneth Kitchen that has been used about this topic very widely, the theory itself is too hard to summarize with the limited character so I'll use a singular quote: The absence of evidence is not the evidence of absence. In other words, just because you don't see it doesn't mean its not there and vice versa. This theory basically goes off of hope that something is there just because initial signs point to it. The reason its used in arguments like this is because it basically justifies someone doing something irrational as taking away someone's individual rights for suspicion's they have neither confirmed nor denied kind of like Schrodinger's cat. But this is told from the catcallers perspective and not the victim itself, not only have you taken away their rights because you thought something , you didn't even have to prove any of your accusations. In other words its the land of the free, and here we have a court of lie where a person or persons are liable to meet these accusations in a court of their peers for a fair trial before anyone's rights can be revoked, this isn't a 'partriot' act, its a fear act. And fear is the degrader of the mind , and the plague of society.

"Evaluate the extent of change in the domestic United States during the Second World War from 1939 to 1945."

Can anyone give me ideas of what would work here?

Answers

One major change for the U.S. during world war2 were changes in the roles that women fulfilled

7. Giraldo is unhappy at work. One explanation that is consistent with psychoanalytic theories of
personality is that

Giraldo feels he cannot really be himself at work, and this lack of self-actualization causes his unhappiness

Giraldo feels critical of his choice not to go to college, and his defense mechanism is to blame his job for his
unhappiness

Giraldo feels he has no choice about his work duties, and this external locus of control leads to his
unhappiness

Giraldo thinks he is terrible at his job and everyone will soon find out, and this lack of self-efficacy leads to
his unhappiness

Giraldo is generally not a very friendly or happy person, and this trait of low agreeableness causes his
unhappiness

Answers

Answer:

Giraldo feels he cannot really be himself at work, and this lack of self-actualization causes his unhappiness.

1. True or False:
Trait theorists see personality as a stable and enduring pattern of behavior. They describe our
differences rather than trying to explain them.

Answers

Answer:

TRUE.

Explanation:

Trait theorists see personality as a stable and enduring pattern of behavior. They have been more interested in trying to describe our differences than in explaining them. Using factor analysis, they identify clusters of behavior tendencies that occur together. Genetic predispositions influence many traits.

3. Which of the following correctly orders the numbers in descending order?
a. 1.25, 1, 5%, 1
b. 13, 15, 1.25,5%
c. 1,5%, 13, 1.25
d. 5%, 1.25, 13, 13
4. Which of the following number is greater than 8.9? Choose all correct answers.
A. 90%
B. 100%
C. 27/3
D. 50/6
d.
6

Answers

Answer:

3. C and 4. C

Explanation:

For number 4

90%=0.9

100%=1

27/3=9

50/6=8.333

Hope it helped.

Other Questions
look at the tables below and determine the slope and y intercept. use this information to write a function rule for each table. Glenn needs to cut pieces of ribbon that are each 1 meter long to make ribbon key chains. If he has 6 pieces of ribbon that are each 1 dekameter long, how many 1meter pieces of ribbon can he cut? I dont know if this is correct. Please help !!!!!!! Will mark Brianliest !!!!!!!!!!!!!! A bottle of water contains 500 ml.A larger bottle holds 30% more.How much does the larger bottle hold? What is the sum of the coefficients of the balanced equation for: Pb(NO3)2 + Al2(SO4)3 ----> Pb2SO4 + Al(NO3)3 If I saw people signing in public I would feel because?? QUICK!!!! HELP!!! Tax collected on goods that are importedA. customs dutyB. judicial review C. jurisdiction D. neutral rights E. tribute Help please please please please please please please please please please please please please What was characteristic of the conflicts between settlers, the military, and American Indian tribes of the late 1800s and early 1900s PLZZ HELP??!!! what is it equivalent to???!!! James is raising money for his school by selling chocolate bars for $2 each. Before he started his uncle gave him $10 towards his goal.What is the slope : What is the Y-intercept: Are the warnings Mary Shelley made in Frankenstein still applicable today ? Bleh, entertain me. This is your projectA.) Give an entertaining story about toasterB.) Convince me that your teacher is interesting as SH./IT (substitute SH./IT for whatever is your choosing;))C.) Convince me that you're a bad./AS./Sh. Yes, tell me your SEe.XY, exhilarating tales... make me swoon, lest I fall off the 6 story balconyD.) gimme dem bars, obviously, why you lookin' STUn.PID... plenty of free beats ;) Flying against the wind, a jet travels 5920 miles in 8 hours. Flying with the wind, the same jet travels 10.980 miles in 9 hours. What is the rate of the jet in still air and what is the rate of the wind? Can somebody pls help me!! Cul es la influencia de la musica hispana en Estados Unidos? Economic activities during feudalism in Western Europewas based on.... What is the answer to 1/4 divide by 8 CAN SOMEONE PLEASE SEND ME A GOOD PICTURE OF A WATER CYCLE WITH ALL THE THINGS THAT HAPPEN IN A WATER CYCLE PLS HELP ME FAST!!!(because I need to draw it for class and I can find good pics, btw they didnt have the subject science so yea) write an editorial article on internet and education