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svp [43]
3 years ago
10

What 3 factors are needed for natrual selection to occur?

Biology
2 answers:
lyudmila [28]3 years ago
8 0
Reproduction, heredity, variation
Arte-miy333 [17]3 years ago
5 0
The three factors needed for natural selection to occur are:
variation
inheritance
differential survival and reproduction
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natita [175]
The active site is complementary to its substrate due to its specific 3D structure. The substrate fits in to one specific active site so an enzyme will only bind to one substrate. They are SPECIFIC. Lock and key theory.
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3 years ago
The horseshoe crab breathes by means of its
DerKrebs [107]

Answer:

Book lungs

Explanation:

The horse shoe crab has a hard outer surface carapace which has the shape of a horse shoe.

It has book lungs which come in 5 sets. The lungs are usually found on the ventral side of the crab.

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3 years ago
After a natural disaster such as a hurricane or tornado what will happen in the damaged ecosystem
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After a tornado or a hurricane the local ecosystem will be very damaged, and when the wind stops blowing, or all the water is drained/dried, the ecosystem will start recovering:

  • The earth will recover
  • Plants will regrow.
  • Animals will come back.
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Hope it helped,

BiologiaMagister

3 0
3 years ago
Read 2 more answers
In the alveolus pictured above, a disease or
Inessa [10]
<h2><u>Full Question:</u></h2>

In the alveolus pictured above, a disease or injury to which structures would reduce the ability of oxygen to diffuse from the alveolar space to the capillary?

A. A and B

B. B and C

C. B and D

D. A and D

<h2><u>Answer:</u></h2>

The correct answer is option D.

<h3><u>Explanation:</u></h3>

Alveoli is defined as the unicellular thickened sac like structure of lungs which helps in exchange of gases in lungs. The exchange membrane of lungs comprise of three structures -

A. The epithelium cells of Alveoli,

B. The basement membrane of alveolar epithelium,

C. The endothelial layer of blood capillary.

The red blood cells described here won't cause any problems to the diffusion of gases from alveolar cavity to blood. The structures mentioned here as the type 2 cells of Alveoli which secrete lecithin, a surfactant which releases the surface tension of Alveoli. This compound prevents the Alveoli from collapsing and helps in diffusion of gases. The other structure mentioned here as D are the alveolar epithelium which is the unicellular thickened membrane of Alveoli, helping in gaseous exchange.

4 0
3 years ago
Mitosis leads to which of the following?
densk [106]
Answer: It leads to 4 daughter cells.

I hope this helps.
3 0
3 years ago
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