Answer:
Explain why leaves need stomata?
Stomata have two main functions, namely, they allow for gas exchange acting as an entryway for carbon dioxide (CO2) and releasing the Oxygen (O2) that we breathe. The other main function is regulating water movement through transpiration.
Explain why plants need small amounts of minerals. Describe how they obtain these minerals?
Plant roots absorb mineral salts including nitrates needed for healthy growth. For healthy growth plants need mineral ions including: - Nitrate for producing amino acids which are then used to form proteins. - Magnesium is needed for chlorophyll production.
Answer:
stomata allow a plant to take in carbon dioxide which is needed for photosynthesis
Explanation:
plants need small amount of minerals to produce amino acids which are then used to form proteins for plant growth. plants Roots absorb minerals needed for healthy growth
Please help me!!!!!!!!!
Answer:
D. Competitive
Explanation:
Animals seem to get aggressive during interaction with other animals.
Practice Time:
1. A car traveling 35 km/hr accelerates to a speed of 45 km/hr in 0.25 hr. What is its acceleration?
Answer:
1km/hr every 1.5 minutes
Explanation:
The acceleration is 40 km/hr²
The initial velocity of the car is= 35km/hr
The Final velocity of the car is = 45km/hr
The Time taken by the car is = 0.25
Acceleration= velocity/time
= 45-35/0.25
= 10/0.25
= 40
Acceleration is 40 km/hr²
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what can be determined from the magnitude of the slope of a distance versus a time graph?
A. acceleration
B. force
C. speed
D. velocity
Answer:
C. Speed
Explanation:
Speed is defined as the distance traveled over time. Mathematically, it's calculated with the equation:
[tex]speed = \frac{distance}{time}[/tex]
Slope of a graph is the rate at which the y and x axis change together, the "rise over the run." Slope can be simply calculated using this equation:
[tex]slope = \frac{x_{2} - x_{1}}{y_{2} - y_{1}}[/tex]
Therefore, when graphing distance versus time, the change in distance is divided by the change in time to find the slope. This is the same as speed.
what would happen if a sex cell could not complete DNA replication?
Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!
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How does a frog get its food into its mouth?
Answer:
With the tongue
Explanation:
The frog uses its long stick tongue to eject its tongue out of there mouth to hit an insect, because the tongue is stick the insect gets stuck and the frog brings the tongue back to them with the insect on it
Members of the Class Arachnida have
five pairs of walking legs.
antennae and mandibles.
cephalothorax and abdomen.
Answer:
cephalothorax and abdomen
Which of the following best describes threadlike structures that connect to the centromere and move chromosomes?
A:Cytokinesis
B:Sister chromatid
C:Spindle fiber
D:Centromere
How would you use the water cycle in your rainforest biome?
Answer:
The role of rainforests in the water cycle is to add water to the atmosphere through the process of transpiration (in which plants release water from their leaves during photosynthesis). This moisture contributes to the formation of rain clouds, which release the water back onto the rainforest.
Explanation:
Hope it helps
i) How can you increase the magnetic strength of a solenoid? (2 points)
ii) Give any two uses of electromagnets.
PLEASE ANSWER THIS IS URGENT!!
Which of the following is NOT evidence for evolution?
A. the fossil record
B. homologous and vestigial structures
C. animals competing with each other
D. animals moving from sea to land
Answer:
C - Animals competing with each other
Explanation:
C is the only one that doesn’t give evidence of evolution
A shows the similarities between the skeletons in different animals. This can help scientists see what organisms have similar structures and what animals they could have evolved from
B shows what organisms could share a common ancestor. Homologous means that the organisms have the same structure in some part of them. Vestigal means the organism has a part to it’s body that is useless. This easily shows what organisms could have a common ancestor
D shows how animals could have evolved from living in the water to being able to survive on land. Pretty self-explanatory
Animals have always competed with each other, so that doesn’t give any evidence of evolution
Can you please help me with both I’m so confused
cuantos electrones se necesitan para formar una carga de-38 uC sabiendo que la carga de un solo electrón es -1.6x10-19 C
Me ayudan xfavor
Answer:
24 * 10 ^ 13 electrones
Explanation:
Tenemos la siguiente información;
Carga en un solo electrón = -1.6x10-19 C
Carga en el electrón en consideración = -38 uC o -38 * 10 ^ -6 C
Ahora,
si la carga en 1electron es -1.6x10-19 C
x electrones tienen una carga de -38 * 10 ^ -6 C
X = -38 * 10 ^ -6 C / -1.6x10-19 C
24 * 10 ^ 13 electrones
Cellular respiration is similar in both plants and animals in what way?
A. Energy is required and oxygen is released
B. Nitrogen is required and energy is released
C. Oxygen is required and energy is released
D. Oxygen is required and nitrogen is released
Answer:
C
Explanation:
cellular respiration is the process of taking organic molecules like C6H12O6 and breaking them down for energy, ATP. Regardless of whether cellular respiration occurs in plants or animals it is the same process, just plants get their C6H12O6 from photosynthesis while animals get it from food
A Siamese cat has genes that affect it’s fur color. it’s fur color is also affected by temperature which of the following claims is true
Answer:
A Siamese cat has genes that affect it’s fur color.
Explanation:
Help please Confusing
Which of the following describes the structure of an amino acid
Answer plz if u can I need help
A stopped car begins moving and reaches a speed of
25m/s in 5 seconds. What is its acceleration?
+25m/s2
+5m/s2
-Om/s²
5m/s
Answer:
B) 5m/s^2
Explanation:
The formula for acceleration is [tex]\frac{vf-vi}{t}[/tex]
vf is the final velocity which in this question is 25m/s
vi is the initial velocity which in this question in 0m/s because it says "A stopped car"
t is the time which is 5 seconds
When you put these numbers into the formula you get 5m/s^2
List the 3 rules you must follow when WRITING a scientific name.
Answer:
The three rules you must follow when WRITING a scientific name are as follows:-
The specific epithet is written secondThe specific epithet is always underlined .The first letter of the specific epithet is never written in capital The binomial name consists of a genus name and specific epithetThe scientific names of species are italicizedThe genus name is always capitalised and is written first The specific epithet follows the genus name and is not capitalisedmaybe this answers points may help u out
I hope this might help u
Why is sweating an effective way to cool the body
Answer:
As the sweat evaporates off your skin, you cool down. Sweat is a great cooling system.
Explanation:
Answer: When the sweat hits the air, the air makes it evaporate (this means it turns from a liquid to a vapor). As the sweat evaporates off your skin, you cool down. Sweat is a great cooling system, but if you're sweating a lot on a hot day or after playing hard you could be losing too much water through your skin.
Explanation: Have a great day!!!
3
population(s) can have the same
species name?
01
02
05
O 10
Answer:
Please write the correct Question
Answer:
1
Explanation:
Anything that restricts the size of a population is known as a(n)? * 09
(1 Point)
A. competition
B. carrying capacity
C. limiting factor
D. over population
Answer:
c: limiting factor
Explanation:
Anything that restricts the size of a population is limiting factor
If a star is 7.5 light years (ly) away how long would it take the light from that star to reach Earth
it would take 7.5 years.
Explanation:
light years are a measurement to determine how long it would take for something the speed of light to reach its destination
Help please
Why do invasive species often cause a decrease in biodiversity?
Invasive species are nearly always top predators.
Invasive species produce offspring with native species.
Invasive species compete for resources with native species.
Invasive species have higher mutation rates than native species.
Answer:
Invasive species compete for resources with native species.
Explanation:
The main problem is that they change the food web.
Answer:
I think its invasive species compete for resources with native species.
Explanation:
Invasive species can change the food web in an ecosystem by destroying or replacing native food sources. The invasive species may provide little to no food value for wildlife. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.
Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats. This can result in huge economic impacts and fundamental disruptions of coastal and Great Lakes ecosystems.
Which answer choice best explains why tractor trailers take more time to speed up and slow down than regular cars?
Answer:
sorry but i need the points
Explanation:
There are 46 chromosomes in ?
Answer:
Humans.
Explanation:
In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.
What does a river do to the land it flows through?
Biomagnification: Hidden Dangers in Food
Webs
Answer:
rfrg
Explanation:
Biomagnification is the process by which toxins and pollutants become increasingly concentrated in the bodies of animals as they move up the food chain. This means that organisms at the top of the food chain, such as humans, can end up with dangerously high levels of these pollutants in their bodies if they consume contaminated prey.
When does this phenomenon is concerning ?This phenomenon is particularly concerning when it comes to certain toxins, such as mercury and persistent organic pollutants (POPs) like PCBs and DDT. These toxins can have serious health consequences, including neurological damage, developmental delays, and cancer.
One example of biomagnification in action is with mercury contamination in fish. Mercury is released into the environment through various human activities, including burning coal and waste incineration. When this mercury enters waterways, it can be transformed into methylmercury, a highly toxic form that accumulates in the tissues of fish and other aquatic organisms.
As larger fish consume smaller fish, the concentration of methylmercury in their bodies increases, leading to dangerously high levels in the bodies of top predators like sharks and swordfish. When humans consume these contaminated fish, they can also accumulate dangerous levels of methylmercury in their bodies.
Similarly, POPs like PCBs and DDT can enter the food chain through contaminated soil and water. As these toxins move up the food chain, they become increasingly concentrated in the bodies of top predators like birds of prey and mammals like seals and polar bears.
These toxins can have serious health consequences for these animals, including reproductive problems and weakened immune systems. When humans consume these contaminated animals, they can also accumulate dangerous levels of these toxins in their bodies.
Biomagnification is a serious issue that highlights the importance of careful monitoring of environmental pollutants and the need for sustainable practices to prevent contamination in the first place.
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Which organic molecule can be broken down into glucose, during digestion?
O Lipids
Proteins
Nucleic acids
O
Carbohydrates
Answer:
carbohydrates
Explanation:
I'm not rlly sure but I think its carbohydrates
Me Ajudem, plss
2. Entre as frases a seguir, em relação à divisão celular por
mitose, uma alternativa é incorreta. Aponte-a.
a) É um processo muito importante para o crescimento
dos organismos
b) Ocorre nas células somáticas tanto de animais como de vegetais.
c) A célula-mãe dá origem a duas células-filhas com
metade do número de cromossomos.
d) Na metáfase, todos os cromossomos, cada um com
duas cromátides, encontram-se no equador da célula em
maior grau de condensação.
Answer:
c) The mother cell gives rise to two daughter cells with half the number of chromosomes.
Explanation:
Mitosis is a type of cell division in which a parent cell is divided into two daughter cells having diploid i. e. double number of chromosomes. This type of cell division occurs in the somatic or body cells which is responsible for the growth of that organisms. This mitosis cell division has six phases such as prophase, prometaphase, metaphase, anaphase, telophase and cytokinesis. Both daughter cells are identical to parent cell.