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IrinaK [193]
3 years ago
11

What important adaptation helped protect organisms of the early cambrian period?

Biology
2 answers:
jolli1 [7]3 years ago
8 0
The hard body parts the organisms had.
MrRissso [65]3 years ago
5 0

The right answer is hard body parts.

A significant change in the environment is a challenge for existing animals; those who until then were perfectly adapted to their environment soon see their existence become more difficult and, natural selection being at work, it is essential that their direct descendants "adapt" to the new conditions under penalty of being eliminated.

Strange animal lineages were identified during this period: some are found in current offspring but most have disappeared without trace: animals that did not give offspring were as well-armed as the others to survive and the others had "found" very ingenious adaptations.

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Match these nutrients with their functions. (iodine, Vitamin D, Vitamin A, phosphorus, Vitamin E, Vitamin K, water, Vitamin B, c
Dafna1 [17]

Answer;(iodine, Vitamin D, Vitamin A, phosphorus, Vitamin E, Vitamin K, water, Vitamin B, calcium, Vitamin C, iron)

1. helps cells function normally ----vitamin E

2. needed by all cells, especially by red blood cells, to help carry oxygen ---iron

3. helps in forming blood cells, helps resist infection, helps prevent fatigue and aids in healing, prevents scurvy ----vitamin C

4. helps keep skin healthy, protects against night blindness, promotes healthy eyes -----vitamin A

5. used by the body to form bones and teeth, helps blood clot, helps muscles and nerves work normally ----calcium

6. keeps nervous system healthy, keeps appetite and digestion healthy, helps body chemistry to function normally ----vitamin B

7. helps blood to clot ----vitamin K

8. necessary to carry nutrients to cells and carry away waste products ----water

9. helps body use calcium and phosphorus to form strong bones ----vitamin D

10. similar to calcium; needed by all cells in small amounts to help them use other nutrients for energy ---phosphorus

11. helps control rate of metabolism of food ----Iodine

Explanation:

6 0
3 years ago
"Superior vena cava carries completely digested substances"
Savatey [412]

Answer:

Yes.

Explanation:

As a blood vessel, Superior vena cava carries completely digested substances that is present in the blood from upper part of the body to the heart. Blood is a fluid that transport digested food from small intestine to other parts of the human body. It also carries oxygen from the lungs to the cells and also carries carbondioxide from the cells to lungs so we can say that Superior vena cava carries completely digested materials.

6 0
3 years ago
While walking in the forest, your friend observed a small animal crawling on a tree. The animal had a rigid body with three body
Neporo4naja [7]

Answer:

The most likely preferable option will be - A.

A. Insects.

Explanation:

The basic features of insects -

  1. Insects have an exoskeleton outside of their body or a shell-like covering on the outside of its body.
  2. Insects have a body with three segments: head, thorax, and abdomen.
  3. Insects have two large eyes and a pair of antennae on top of their heads.
  4. Insects have six legs (3 pairs).
  5. Insects have two pairs of wings on the dorsal part of their body.

 

7 0
3 years ago
________ is a process that creates genetic variety in cells. (2 points)
Zigmanuir [339]

Answer:

B

Explanation:

I believe it is meiosis because there are two parts in which it helps to increase genetic variety. In prophase 1, the genes cross over, which increases the variety. Also, the chromosomes are assigned randomly in Metaphase 1.

Hope this helps:)

4 0
3 years ago
Read 2 more answers
Rose plant can reproduce by just cutting one of its long stems and stick it to the soil. This is a best example of what type of
Artemon [7]

Answer:

c

Explanation:

8 0
3 years ago
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