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RoseWind [281]
3 years ago
13

20. Frigatebirds have webbed feet and spend much

Biology
1 answer:
Anettt [7]3 years ago
8 0

Answer:

Evolution changes the abilities of the Frigate birds.

Explanation:

The Frigate birds have webbed feet because they live in the ocean and unable to fly due to its big weight. Before the evolution, the Frigate birds lives in the ocean due to their large body weight but with the passage of time, evolution occurs that leads to formation of flying ability in the bird so now the bird have the old characteristics of their ancestor as well as new abilities in the physical traits of the Frigate birds due to the evolution.

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Dentify the pair of homologous structures
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Answer:

a. maple leaf and oak leaf

Explanation:

Homologous structures are those that have the same evolutionary origin but fulfill very different functions, a good example could be the wing of a bird and the wing of an insect, the wings of birds, are modified front members and the wings of insects are "BRANCHES" modified

In the case of maple and oak leaves they are homologous structures because they have a common ancestor according to their genetic decoding, that is, even if they can look different or behave differently, they are genetically homologous structures.

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Due to trends and studies of most fossil-bearing rocks being formed in the ocean, the major index fossils are mostly marine animal or plant organisms.

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