(giving brainliest if u help)The following are steps in an investigation into electrically charged objects.
Step #1: Blow up a balloon.
Step #2: Rub the balloon against your hair.
Step #3: Rub a plastic fork against your hair.
Step #4: Bring the two objects together and observe what happens.
Which steps are required to charge the objects?
A: Step 1 and 2
B: step 2 and 3
C: step 3 and 4
D: step 1 and 4
Answer:
B, Step 2 and 3.
Explanation:
Once you rub a balloon against your hair and try to slowly remove it, your hair will be pulled towards the balloon like a magnet. This is because the balloon charged your hair and your hair was then able to get attracted to the balloon, the same applies to the fork.
during the process of cellular resperation energy is released from
Answer:
glucose
Explanation:
During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate)
A predator prey relationship. in which the populations rise and fall in response to each other is an example of
A -A positive feedback loop
B - A negative feedback loop
C - A manmade feedback loop
D - all of the above
Answer:
the answer is d (all of the above)
Explanation:
no
raw materials are cheap true or false.
Answer: False
Explanation:
Prices are surging for raw materials, leading to higher costs for companies from home builders to clothing makers. ... Higher input costs generally accompany broad economic growth, which allows companies to pass along added expenses through higher prices of their own.
How does biodiversity affect the stability of an ecosystem?
Answer:
biodiversity in ecosystem, species, and individuals leads to a greater stability .
Explanation:
for e.g species wth high gentic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances ,diseases and climate change.
As well as carbohydrates, what is wholemeal bread a good source of?
Answer:
Proteins
Explanation:
Wholemeal bread is a rich source of carbohydrates and protein along with unsaturated fats, vitamins and minerals. Hope this helps.
Does the human population in an area affect the environment?
Answer:
Human population growth impacts the Earth system in a variety of ways, including: Increasing the extraction of resources from the environment. These resources include fossil fuels (oil, gas, and coal), minerals, trees, water, and wildlife, especially in the oceans.
Explanation:
Mercury is found in a food chain. Which organism would have the highest concentration?
a
A. Bacteria
O B. Shrimp
O C. Algae
O D. Shark
can you answer this?
Answer:
possibly the second one
Explanation:
not sure
PLEASE HELP, I WILL MARK BRAINIEST
what determines an atom's reactivity?
#1. how many protons the atom contains
#2. how many energy levels the atom contains
#3. whether the atom is a metal or a non-metal
#4. how many valence electrons the atom contains
Answer:
D) How many valence electrons the atom contains.
Explanation:
This is the only closest one
because the number of electrons in the outermost shell is the correct answer
a student placed a plant under a lamp that gets direct, bright light every day. the plant starts to grow toward the light. what kind of response is the student investigating?
organisms that belong to the same ___ are most closely related.
Answer:
Family
Explanation:
-------------------1--------2-------------3
Kingdom Animal --Animal ---Animal
Phylum Chordate- Chordate - Chordate
Class Mammal - Mammal- Mammal
Order Primate Carnivore Carnivore
Family Hominidae Felidae Felidae
Genus Homo Panthera Felis
Species Sapiens Leo Domesticus
Organisms 2 and 3 are most closely related because they have the same family name. Organism 2 is a lion, organism 3 is a common housecat, and organism 1 is a human.
On the internet, read about the Clean Air Act of 1990:
a. Summarize what it says.
b. How should it help with the problem of acid rain?
c. How successful has it been in reducing the harmful chemicals from the burning of fossil fuels that cause acid rain?
d. What can you do personally to help alleviate the problem of acid rain?
3. Find two examples of actual ecological places that have been affected by acid rain. Tell their location and describe what happened.
Acid rain is formed when gases such as SOx and NOx are released by burning fossil fuels.
The clean air act has to do with the reduction of the gases that lead to acid rain such as SOx and NOx. The full implementation of the legislation ought to reduce the occurrence of acid rain.
However, since the introduction of the act in 1990, reduction in acid gas pollution has not reduced significantly since acid gases are still produced by the burning of fossil fuels.
To help alleviate the problem of acid rain, I must reduce my use of gasoline powered vehicles and embrace vehicles that depend on renewable energy sources and clean fuels such as hydrogen fuel.
Eastern Europe countries such as Poland and Scandinavia have been severely affected by acid rain. The pH of water bodies in these areas are unusually low.
Learn more about acid rain: https://brainly.com/question/53991
Which of these will be the best for a jungle environment
I think answer choice B, I believe its a black panther
A. Modified TRUE or FALSE: Write TRUE if the statement is correct. Otherwise, change the underlined word/phrase to correct the statement.
Answer:
both are true
true
true.......
What is the relevance of osmosis to the root hair cells?
Answer:
absorb water from the soil by osmosis.
Explanation:
Root hair cells
Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption
The graph below shows the number of push-ups a
student completed in each of four 2-minute trials (A-
D) during a 15-minute exercise period.
70-1
65
60
Trial A
50
45
Trial B
Number of Push-ups
Trial
25
20
15
10
Trial D
5
0
D
2 3 4
6 7 8 9 10 11 12 13 14 15
Time in Minutes
The concentration of lactic acid in the student's
muscle tissue was most likely greatest during trial
A) A В) В
C) C D) D
Option D has the highest concentration of lactic acid in the student's muscle tissue.
We can arrive at this answer because:
Lactic acid increases its concentrations in the muscle due to a high physical effort in anaerobic conditions.This promotes a lack of oxygenation in the muscle, which through contractions, causes the cell to partially catabolize glucose molecules.The result of this is the creation of two pyruvic acid molecules, which will react with NADH2 molecules, creating lactic acid, which will build up in the muscle as the exercise continues.As we can see in the information presented above, option D shows the performance of flexions with more intensity and for a longer period, which justifies a greater accumulation of lactic acid in the muscle.
It is important to remember that the accumulation of lactic acid in the muscle is a negative situation and that it can cause muscle pain and fatigue.
More information on lactic fermentation at the link:
https://brainly.com/question/13769502
PSYCHOLOGY!!! HURRY
Which of the following aspects characterizes altruism?
Answer:
sorry I don't no
Explanation:
I really need like
THE BEST ANSWER GETS BRAINLIEST
Why are hydrogen bonding and popularity so important for water molecules?
Answer:
they are so important because the presence of hydrogen bonds also makes water molecules more 'sticky' or in scientific terms cohesive and adhesive. The small charges on the water molecules allows them to stick together which is why water has a 'skin' that small insects can walk on, and also explains why water can be sucked up a straw so easily.
Explanation:
I hope this helps you!
10 facts about “molecules”
what does at risk classification mean??
Answer:
Risk classification is the practice of grouping people together.
Explanation:
According to the risks they present, including similarities in costs for potential losses or damages, how frequently the risks occur, and whether steps are taken to reduce or eliminate the risks.
Can someone explain to me what flowering time is?? And how to control flowering time???
Answer:
Flowering time refers to the amount of time the plants will spend in the flowering stage. It begins when you switch your lights to a 12/12 schedule and ends when the buds are ready to harvest. ... In this case, the actual flowering time (as understood by most breeders) would be 2-3 weeks longer. so the flowers will spend time in differents parts of different stages
A dramatic change in the life cycle of plants is the transition to flowering, which is triggered by both environmental signals, as temperature and photoperiod, and endogenous stimuli. so it would just 2 be to watch over there environment and what u are doing 2 them
Explanation:
Answer:
Flowering time is the amount of time that a plant will stay in it's flowering stage. the flowering time of its life will reach 12 hours or less of light per day.
It's controlled by environmental conditions and development regulations, such as temperature, photoperiod and endogenous stimuli
hope this help's and have a good day :)
Ovulation occurs in response to the release of an anterior pituitary hormone known as ________ hormone.
Answer:
Lutenizing hormone aids in the maturation and release of eggs from the ovary
help with this plssssssssssssss
Answer:
blastocyst / blastula forms
Answer:
blastocyst
Explanation:
im not sure how to explain this i just took this test.
its one of those question you do flashcards for.
It would gain nutrients from the water in the environment.
Answer:
True?
Explanation:
Why do we move forward in time?
what can you do with snowflakes in animal crossing
Answer:
I don't know cause I don't play that but I think is cats
Which type of competition happens
between two organisms of the same
species?
A. interspecific
B. intraspecific
C. invasive
Answer: intraspecific competition
hopes this helps.
Answer:
A. Interspecific is my best guess.
Explanation:
“Inter” means inside, so I’m guessing it would relate to the organisms being of the same species. “Intra” means outside. And invasive just doesn’t make any sense.
Which of the following is NOT a way that carbon is released into the atmosphere?
Answer:
what are the options? pls list them in the comments
drag the labels to their appropriate locations on the diagram of the neurons below. use targets of group 1 to indicate the components of neurons. use targets of group 2 to indicate the locations of gated ion channels.
Neurons are cells in chauge of synapsis. a)cell body / b)myelin sheath / c)synaptic terminal / d)axon hillock / e)nucleus / f)location of voltage-gated channels / g)location of ligans-gated channels / h)axon / i)dendrite
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Most neurons are composed of a cell body, dendrites that are cytoplasmic extensions that receive impulses from other cells, and an axon that is a long formation capable of conducting the electrochemical signals.
Neurons transmit nervous impulses.
Every neuron forms connections with other neurons. These connections are known as synapsis.
During synapsis, when a presynaptic neuron sends information, it releases neurotransmitters. This event is done through exocytosis.
The neurotransmitter is a molecule that travels through the synaptic space forward to the other neuron.
Once it reaches the target, it binds to its receptors in the postsynaptic membrane, causing ion channels to open.
This binding produces a depolarization of the cell called an excitatory postsynaptic potential.
Once the action potential is initiated, it spreads to the rest of the membrane, depolarizing it.
When the electrical stimulus is applied to the axon's membrane, it produces depolarization by activating the sodium voltage-dependent channels all along the axon.
Besides, there is an increase in sodium permeability.
Depolarization propagates to inactivated regions adjacent to the membrane opening more sodium channels.
The fiber diameter and the conduction velocity are closely related, exhibiting a directly proportional relationship. Mielinized fibers are thick, and their conduction velocities are very fast.
The conduction velocity sharply increases in myelinated fibers. This is because of the high concentrations of sodium channels in the Ranvier nodes that are not myelinated areas, and the diameter of the axon becomes thinner.
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You ca learn more about neurons at
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