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dimaraw [331]
3 years ago
15

[[ LAST QUESTION FOR MY EXAM !!! ]]

Biology
2 answers:
Rashid [163]3 years ago
6 0
A.) sexual phenotypic traits
Marta_Voda [28]3 years ago
4 0

Answer:

b) extreme

Explanation:

Disruptive Selection:

  • Disruptive or diversifying selection is a form of natural selection that favors phenotypes on the extreme ends of the trait/characteristic spectrum over intermediate phenotypes.
  • This occurs in environments where two extreme traits are the fittest to survive and successfully produce offspring.
  • London's peppered moths are one of the most prominent examples of disruptive selection. The rural environment favored moths with lighter colour but the darker coloured moths were easily spotted by predators.
  • On the other hand, industrial areas favored darker coloured moths as they could easily camouflage in the polluted surroundings. Here, the lighter moths were the ones to be easily spotted by predators.
  • However, moths of intermediate shades were easily spotted in both environments as they couldn't camouflage easily.
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Answer:The nitrogen present in the soil is not directly used by the bacteria. It can be used only when the nitrogen is converted into usable form. These bacteria convert  atmospheric nitrogen into ammonia, then nitrite which is then converted into nitrate. This nitrate is used by the roots of the plants like soybeans and peas. This is the role of bacteria present in the roots of the plant to convert atmospheric nitrogen into usable form that can be used by plants.

Explanation:

3 0
3 years ago
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The table shows the commonly eaten foods of some groups of organisms.
scoray [572]

Answer:

3. B, D

Explanation:

A primary source is an animal that eats only plants. (herbivore) A secondary source is an animal that only eats herbivores (carnivores)

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D has vegetables and grains; which are food for herbivores, and meat; which is food for carnivores

The other options have only food for carnivores, or only food for herbivores, so the answer is 3

3 0
3 years ago
If you put a cell in pure water, will the cell shrink, stay the same size, or swell? Why?
Maslowich

Answer:

swell

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the cell will swell and become turgid as more water will be absorbed into said cell. this process is called osmosis, where water passes through a partially permeable membrane.

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2 years ago
Describe what it means when we say that DNA replication is semi-conservative:
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Explanation:

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The human heart is separated into left and right sides. this type of structure provides for the
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