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OverLord2011 [107]
3 years ago
7

Describe the Cambrian explosion and its significance.

Biology
2 answers:
mr Goodwill [35]3 years ago
7 0
The Cambrian period marks an important point in the history of life on earth
andrey2020 [161]3 years ago
6 0

Answer:

The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion," because of the relatively short time over which this diversity of forms appears.

Explanation:

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Population characteristics and issues​
kow [346]

Answer:

Density, dispersion, growth

Explanation

Population refers to the total number of all members of a species occupying a particular area or habitat at a given time. Populations are not static but change in size, structure and organization. Some of the characteristics of population are:

  • Density which refers to the number of members of a species per unit area or volume.
  • Dispersion refers to the spread and distribution of individuals of a species within a habitat.
  • Growth is the rate of increase or decrease in the number of individuals in a population which is balanced by birth rate and death rate.

The issues that affect population include competition, predation, emigration, diseases and parasites.

8 0
4 years ago
_____ is any condition of unusual deposits of black pigment in body tissues or organs.​
Naily [24]
Melanosis is any condition of unusual deposits of black pigment in body tissues or organs. Therefore, your correct answer would be letter choice A provided.
7 0
3 years ago
Which flower part is formed from fused carpels
zhannawk [14.2K]
That'd be the sepal, which is actually protected by the pedals, therefore, the answer is sepal. I hope this helps!
6 0
4 years ago
Hey guys if you answer this in the next 12 hours ill give 50 points and brainiest so here it is, the subject is water and the en
Xelga [282]

1: I believe is B.

2: I believe is True

3: I believe is D.

4: I believe is D.

5: I'm not completely sure about this one, because it depends on the substance.  Rocks molecules don't move because the object is solid, no matter how cold or hot the rock is.  But if I were to guess, I would say True.

6: I believe is A.

7: I believe is B.

8: I believe is False.

9: I believe is False.

10: I believe is C.

11: I believe is False.

12: I believe is C.

13: I believe is A.

14: I believe is A.

I really hope I got all of these correct.  Hope this helped!

-TTL

3 0
3 years ago
Read 2 more answers
Which enzyme(s) involved in fatty acid synthesis utilize ATP? Select all that apply.
GREYUIT [131]

Answer:

a. Acetyl CoA carboxylase  

Explanation:

Much of the fatty acids used by the body is supplied by the diet, excessive amounts of carbohydrates and protein obtained from the diet can be converted to fatty acids and stored as triglycerides. Fatty acid synthesis occurs mainly in the liver and mammary glands, and to a lesser extent in adipose tissue and kidney, the process incorporates acetyl CoA carbons into the forming fatty acid chain using ATP and NADPH.

The acetyl portion of acetyl CoA is transported to cytosol as citrate, produced by condensation of oxaloacetate and acetyl CoA, the first reaction of the citric acid cycle, this occurs when the concentration of mitochondrial citrate is high, observed when there is a high concentration of ATP and isocitrate dehydrogenase is inhibited.  The increase of citrate and ATP favors the synthesis of fatty acids, since this pathway needs both. Acetyl CoA should be converted to malonyl CoA. Carboxylation is catalyzed by acetyl CoA carboxylase and requires ATP, this reaction is the regulated step in fatty acid synthesis: it is inactivated by products, malonyl CoA and palmitoyl CoA, and activated by citrate, another regulatory mechanism is reversible phosphorylation of enzyme, which makes it inactive due to the presence of adrenaline / glucagon

6 0
3 years ago
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