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hammer [34]
3 years ago
8

Two strands of DNA are joined to each other or held together by

Biology
2 answers:
alekssr [168]3 years ago
4 0
This would be called hydrogen bonds since they are weak in terms of the strands unwinding to be continually read
skad [1K]3 years ago
3 0

two strands of DNA are held together by weak hydrogen bonds.

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In ostriches, there are 2 types: ones that run fast and those that run slowly. The fast birds can reach up to 40 miles an hour.
liraira [26]

Answer:

Natural selection will select the type of ostriches that can run up to 40 mph.

Explanation:

According to the theory of natural selection, organisms with favorable traits following their environment are more likely to reproduce. In doing so, they pass on the better traits to their next generation for the survival of their species.

This process allows organisms to adapt to their environment. And the survival of species is assured.

Here, the type of ostriches that run slow probably fall prey to the jackals. To maintain survival, the ostriches reproduce and lay eggs. If out of almost a dozen eggs, one or two are left to hatch than the <em><u>chances of their survival</u></em> will greatly be affected if the hatching ostriches are of the <em>slow-running type</em>.

Therefore, natural selection may stay in favor of <em>fast-running ostriches</em> to hatch.

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3 years ago
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Monica [59]
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Speed up chemical reactions

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Eating faster, chewing food less thoroughly, and being more responsive to stimuli associated with food but less responsive to in
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These children often chew very fast and swallow food without properly breaking it down. Thus they are not able to realize when they are full. They ignore the internal cues for hunger or fullness and keep eating to satisfy their palate. As a result, they become obese.

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