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Tems11 [23]
3 years ago
13

Choose all the answers that apply.

Biology
2 answers:
Inga [223]3 years ago
6 0

Answer:

The troposphere is the lowest layer

Explanation:

hope this helps!! there could be more that are right I'm just not sure so

zimovet [89]3 years ago
6 0

Answer:

The answer is 2.responsible for weather and clouds

Explanation:

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One of the many things plants do is produce oxygen through photosynthesis (which we use all the time)
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Covalent bond means that the atoms involved will _____.
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I think C since they share valence electrons

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What is the role of adenosine triphosphate (ATP) within a cell?
ipn [44]

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Its B. Biological molecule that stores energy

4 0
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Tetrodotoxin, also known as "zombie powder" is synthesized by the puffer fish as a defense mechanism. Tetrodotoxin's mechanism o
torisob [31]

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True

Explanation:

Tetrodotoxin is the molecules that act as a poison to the organism in which they are injected.

The tetrodotoxin proves lethal to the organisms as it kills the organism by interfering with the nervous system. The tetrodotoxin blocks the sodium channels in the neuron as a result of which the sodium is unable to enter the neurons and hence the electrical impulse is not generated.

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Thus, true is correct.

6 0
3 years ago
He light colored rock pocket mice in New Mexico blend in with the sandy soil of the area, but on darker lava flow, the light col
fiasKO [112]

<u>Answer</u>: option B they have a random gene mutation that affects their fur colour.

<u>Explanation</u> :-

  • <em>Variation</em> is the phenomena which occurs in all populations.
  • These variations result in slight differences in the phenotypes of individuals .
  • These variations only arise due to <em>random mutations </em>that arise in the individuals’ genome and then can be inherited by their offspring.
  • There is always a probability of one particular trait to make the individuals survive better in the environment as compared to other trait.
  • The individuals having the trait that helps them to survive better in the environment tend to survive more and leave more progeny. This is termed as <em>survival of the fittest</em>.
  • Thus, according to the question it can be inferred that the dark fur colour arose due to a <em>random mutation </em>since it is the only source of variation. Since, in the given environmental conditions the mice having the dark fur colour were less susceptible to the predators they are better fitted to survive.
  • The dark brown fur coat mice, survive better, leave more progeny and hence, increase their population with time. However, the orginal source of origin of this trait was a random mutation. Had this mutation not occured, the dark coloured fur mice would not have been there.

So, a <em>random gene mutation affecting the fur colour made the dark coloured mice first appear in the population.</em>

6 0
3 years ago
Read 2 more answers
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