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sergeinik [125]
3 years ago
7

Explain the trend that is related to biodiversity levels of ecosystems I need it ASAP

Biology
1 answer:
LuckyWell [14K]3 years ago
4 0

Answer:

Usually three levels of biodiversity are discussed—genetic, species, and ecosystem diversity. Genetic diversity is all the different genes contained in all individual plants, animals, fungi, and microorganisms. It occurs within a species as well as between species.

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Consider the evidence that explains how physical separation of two populations of a species can cause speciation. What effect do
Tom [10]

Answer:

  • Interruption in the genetic flow between separated groups
  • The emergence of new mutations in each of the groups, and their accumulation in time. Slow and gradual differentiation between populations.
  • Genetic divergence by natural selection and reproductive isolation
  • Prezigotic isolation mechanisms

Explanation:

Allopatric speciation consists of the geographic separation of a continuous genetic background that can give place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new groups that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

The process of allopatric speciation involves different steps that affect organisms:

  • The emergence of the barrier.
  • Interruption in the genetic interchange
  • The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
  • Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.
  • Prezigotic isolation mechanisms will be favored by selection if occurs a secondary contact between the new species in formation.
4 0
2 years ago
Which organisms perform cellular respiration?
adelina 88 [10]

Answer:

bacteria, archaea, plants, protists, animals, and fungi,

Explanation:

3 0
3 years ago
Check all of the items that are cycled through the biosphere in biogeochemical cycles.
Svetradugi [14.3K]

Answer:

All are cycled through

Explanation:

7 0
2 years ago
What type of reaction occurs when large carbohydrate molecules are broken down into smaller sugars? select one:
seraphim [82]
Answer: D

Carbolic reactions breaks larger substances to smaller ones.

Anabolic reactions forms larger compounds from smaller units.

DNA synthesis does not involve breaking down of sugars.

Dehydration is a umbrella term used for reactions that releases water as a byproduct. In the case of sugars, they are held by Glycosidic bonds. To break them, hydration is needed as 1 water molecule breaks 1 glycosidic bond. The process of forming large units of sugars involves dehydration to form the glycosidic bonds. Therefore option d is wrong.

DNA guiding production of protein is definitely wrong as this process doesn't cause sugars to break down at all.
7 0
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How could sarcoidosis be misdiagnosed as stage 4 breast cancer?
ValentinkaMS [17]
Sarcoidosis can<span> easily be </span>mistaken for other systemic and especially metastatic disease.

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5 0
3 years ago
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