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Anna11 [10]
3 years ago
14

The food web consists of several different smaller _____.

Biology
1 answer:
dem82 [27]3 years ago
5 0
Food chains I hope this is correct
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Human populations in low-UV environments tend to have more lightly pigmented skin. One explanation is that the selective pressur
nikdorinn [45]

Answer:

Lightly pigmented people tend to be at higher risk of vitamin D deficiency

Explanation:

BACKGROUND KNOWLEDGE:

Human skin is the largest organ of the body which makes boundary line between environment and internal conditions.  Human skin cell produces pigment called melanin when ever it is subjected to Sun. More the melanin pigment produced more will be the skin darkens. Ultraviolet (UV) radiations also come from Sun and responsible for more pigmentation.

ANSWER EXPLANATION:

According to the question darkly pigmentation only occurs when their is high level of UV radiations. High level of UV radiations are also responsible for Vitamin D production.

People with lightly pigmented means that there environment has low level of UV radiations which are the requirement of Vitamin D production. Hence due to low UV radiations peoples with light pigmentation's are also be at higher risk of vitamin D deficiency

7 0
3 years ago
Which of these muscles cell types contracts the heart?
Doss [256]
Cardiac muscles is the answer
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3 years ago
The failure to deliver blood to the heart due to a narrowing of arteries results in __________.A.atherosclerosisB.a strokeC.coro
Bond [772]

Answer:

c

Explanation:

coronary heart disease

4 0
3 years ago
For human baby to be born a boy he must receive
kompoz [17]
... a Y chromosome from the father.
5 0
3 years ago
The relationship between the remora is and the shark is an example of
malfutka [58]

Answer:

An example of mutualism is the relationship between remora and shark.

Explanation:

Remora depends on sharks for food and locomotion. It has a sucking mouth that helps it to attach itself to the shark.

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