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deff fn [24]
3 years ago
12

Features unique to mammals include ______.

Biology
1 answer:
V125BC [204]3 years ago
8 0
There are a couple features unique to mammals, here are some:

1. Mammary Glands- evolved from modified sweats glands, these are used to create milk for offspring. Only females produce this milk.
2. Hair- this is an adaptation that provides insulation to keep the animal warm, provide protection of the skin, and sometimes camouflage the animal through the hair's color patterns.
3. Sweat glands- while being unique to mammals, they are not present in all of them. For example, whales do not have sweat glands at all because they live in the ocean! 
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Given what we know, we can confirm that as scientists study fossil records, they can learn much about the species, such as the traits and activities of the organisms in question.

<h3>What does each fossil type teach us?</h3>
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6 0
3 years ago
Question 1:
SpyIntel [72]

Hello. You forgot to enter the necessary data for this question to be answered. The data are shown in the figure attached below:

Answer:

Red-capped Robin is the group of Robins that share a more recent common ancestor with the Norfolk Island robins.

Explanation:

Red-capped Robin is the group of Robins that share a more recent common ancestor with the Norfolk Island robins, this can be seen by the degree of genetic similarity between these two species, since the Red-capped Robin has 98.2% of genetic similarity .

When two species have the same common ancestor, these species have great genetic similarity and the more recent this ancestry is, the greater the genetic similarity between the species.

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