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Alika [10]
3 years ago
15

Which of these scenarios is an example of natural selection?

Biology
2 answers:
Goshia [24]3 years ago
5 0

Answer:

C

Explanation:

dedylja [7]3 years ago
5 0

Answer:

C. Giraffes with longer necks survive the dry season by eating leaves from the tops of trees. Those giraffes breed more successfully that year.

Explanation:

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The great ocean conveyer belt explains how cold the dence water curiculates ypwellinf occurs sun light surface water and then th
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True

Explanation:

The ocean conveyor belt explains the cyclic nature of global water round the globe.

It suggests that cold denser water circulates and moves downward whereas warm water rises.

  • The great ocean conveyor belt shows that the world's ocean is constantly circulating and mixing.
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5 0
3 years ago
Some regions of a polypeptide may coil or fold back on themselves. This is called _____, and the coils or folds are held in plac
zalisa [80]

Answer:

The options are

A. secondary structure ... hydrogen bonds

B. secondary structure ... peptide bonds

C. tertiary structure ... hydrogen bonds

D. primary structure ... covalent bonds

E. tertiary structure ... covalent bonds

THE CORRECT ANSWER IS A.

A. secondary structure ... hydrogen bonds

Explanation:

The secondary structure of a polypeptide shows the localized regions of its organised structure being upheld by hydrogen bonds among the major groups

-NH and C = O

At the same time, it inhibits the hydrogen bonds of the side chains from influencing the reaction process.

The polypeptide secondary structure shows the dexterity to curl or fold as sustained by the polypeptide chains.

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