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mixer [17]
3 years ago
7

The gradual change and build up of organisms in an environment

Biology
1 answer:
Ede4ka [16]3 years ago
8 0
Can you tell me what I'm supposed to be answering? I need more details please. 
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What is the medullary index for an organism that has a medulla width of 2cm and hair shaft width 4cm? Is this organism human or
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Answer:

a. 1/2 b. The organism is an animal

Explanation:

a. What is the medullary index for an organism that has a medulla width of 2cm and hair shaft width 4cm?

Medullary index = diameter of medulla/diameter of hair.

Given that diameter of medulla = medulla width = 2cm and diameter of hair = hair shaft width = 4cm,

Medullary index = diameter of medulla/diameter of hair = 2 cm/4cm = 1/2

b. Is this organism human or animal?

Since the medullary index = 1/2 > 1/3 (if it is ≤ 1/3 it is human hair and ≥ 1/2 it is animal hair), it is animal hair. So, the organism is an animal.

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Where does the carbon that reacts to form carbon dioxide come from?
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The principal advantages of asexual reproduction are what
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The principal advantage of asexual reproduction is that the organism does not have to waste time or energy looking for a mate.
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