Darwin’s theory of common descent states that all organisms _____.

Biology

2 answers:

sladkih [1.3K]1 year ago

4 0

Are descendants of a single ancestor

postnew [5]1 year ago

3 0

Answer:

The theory of common descent states that all living organisms are descendants of a single ancestor.

Explanation:

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A student discovers a mat of green organisms living along the edge of a stream and suspects it is a moss. To confirm that this o

spin [16.1K]

Answer:

He should look out for tiny leaf-like structures which mosses possess but algae does not .

Explanation:

In general, moss looks fibrous, feathered or latticed when viewed up close. Carpets of moss are springy to the touch. When germinating, moss puts up thin stems sometimes with leaves on top and reproductive spores. Algae have no threadlike structures or leaves. Instead, algae spread as a clump of living cells. Because algae usually grow in wet environments, they look like a slimy, wet mass, often green in color. Both moss and algae may appear green or brown depending on species and the dryness of the conditions.

4 0

3 years ago

According to the pie chart, which cause results in the most extinctions?

Sophie [7]

<h3><u>Answer;</u></h3>

B.introduced species

<h3><u>Explanation;</u></h3>

<em><u>Animals become extinct for a number of reasons. Currently many animals are endangered or have become extinct due to human activities or human influence.</u></em>
Extinctions may be caused by reasons;<em><u> such as pollution; loss of habitat due to human activities such as agriculture, introduced species, hunting and poaching for meat and other animal products such as feathers, horns and skins, and also over-harvesting among other influences.</u></em>
In this question; <em><u>Introduced species occupies the largest percentage, that is 39%, from the pie chart (Attached).</u></em>
Hunting and poaching; 23 %, Habitat loss; 26%, and Others; 2%.