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lianna [129]
2 years ago
5

Scientists have evidence that the Earth has gone through several "ice ages" in which most of the Earth's surface was

Biology
1 answer:
Sladkaya [172]2 years ago
7 0

Answer:

D

Explanation:

This would assist in proving there were ice ages because it shows that cold adapted animals were living before, in what is now warm environments.

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14. The diagram below represents changes in the sizes of openings present in leaves as a result of the actions of cells X and Y.
Fiesta28 [93]

Answer:

4

Explanation:

8 0
2 years ago
Suppose we found a solar system with the property described below. In light of what you have learned about the formation of our
adelina 88 [10]

Answer:

Surprising

Explanation:

This is surprising because the total number of planets in our solar system are nine which revolve around a central star i.e sun in different orbital paths.  

Also, out of 9 nearly four planets i.e Mercury, Earth, Venus and Mars are terrestrial i.e having some land forms. Out of remaining 5 non terrestrial planets nearly four planets are gas planets (Jupiter, Uranus, Neptune and Saturn) and these planets are distantly positioned from the central star

Hence, the given discovery is surprising

4 0
3 years ago
Which statement best explains the decrease in energy availability in a food chain?
Stolb23 [73]

Answer: The correct answer is D) Some energy in each trophic level is used for life processes.  

Food chain represents the flow of energy through various living organisms (which lie at different trophic levels) in an ecosystem. The energy flows from one trophic level to the next and it is decreased with subsequent trophic levels.

As per the law of 10% energy transfer, only 10 % of the energy is transferred from one level to the next as the rest of the energy at every trophic level is utilized in various metabolic processes like respiration, digestion, excretion and also liberated as heat in the surrounding.

Due to this, the energy available at any trophic level is less than the previous trophic level.

7 0
3 years ago
Read 2 more answers
If we inserted an anabolic Tryptophan (trp) operon with GFP for amino acid synthesis instead, what would happen if we grew the b
nignag [31]

Answer:

Since there is presence of excess tryptophan, the trp operon will be switched off, since the bacterial need not to synthesize.

Explanation:

Understand the following.

The trp operon is a group of gene that encode biosynthetic enzymes for the amino acid tryptophan.

The transcription gene in the operon is switched off when the tryptophan is in excess but is switched on by the bacterium when the tryptophan is low, so that more tryptophan can be produced.

5 0
2 years ago
What allows fish to eat bigger prey and thus grow bigger
vaieri [72.5K]
Adaptation? Their size plays a role in this, and size is sometimes an adaptation.

3 0
3 years ago
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