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IgorC [24]
4 years ago
5

Paleontologists have found evidence that after a major extinction occurs, _____. there is no particular pattern of speciation ma

ny new species often appear at about the same time a new species evolves to replace each species that became extinct most species move away because they cannot adapt
Biology
2 answers:
Charra [1.4K]4 years ago
5 0
Up and downs of biodiversity
nirvana33 [79]4 years ago
5 0

Answer:

The correct answer would be - new species often appear at about the same time.

Explanation:

A biotic crisis or a mass extinction crisis is a rapid and widespread decrease in biodiversity. There is a clear change after the mass extinction, in the diversity and  of multicellular organisms.

Thus, the correct answer would be - many new species often appear at about the same time.

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Severe anemia may trigger an adaptive conversion of:
goldfiish [28.3K]

Severe anemia may trigger an adaptive conversion of yellow bone marrow to red bone marrow.

Anaemia is defined as the decrease or the reduction of the oxygen carrying content of the blood which are the red blood cells.

These red blood cells and other blood cells which include the white blood cells and the platelets are produced in the body by the bone marrows by a process called haemopoiesis.

The bone marrow is divided into two:

  • yellow bone marrow and
  • red bone marrow.

The red bone marrow is made up of stem cells which can be converted to red cells when the need arises while yellow bone marrow is made up of fat.

During health conditions such as anaemia, there is increase in the need of red blood cells by the body.

There is usually the conversation of yellow bone marrow to red bone marrow to compensate for the increased demand of red blood cells.

This conversation is called an adaptive conversation.

Therefore,Severe anemia may trigger an adaptive conversion of yellow bone marrow to red bone marrow.

Learn more here:

brainly.com/question/18921249

3 0
3 years ago
In ____, several sets of alleles control the phenotype and each dominant allele present codes for a product which has a quantita
tatuchka [14]

Answer:

Polygenic inheritance

Explanation:

Polygenic inheritance occurs when a genetic trait is regulated by more than one genes. All the alleles of these genes together determine the phenotype of the organism for the polygenic trait. Here, the phenotype is regulated by the total number of dominant alleles for all the genes that regulate a polygene trait.

For example, human skin color is a polygenic trait. The final phenotype depends on the total number of dominant alleles of all the genes that regulate the skin color in human.  

6 0
3 years ago
In the suburbs, per capita consumption of fossil fuel is very high. What is most likely effect of this?
mrs_skeptik [129]

Answer: gas in the air, pollution

Explanation:

8 0
3 years ago
How are mitosis and binary fission similar?
krek1111 [17]

The correct answer is:

A - They produce identical daughter cells.

8 0
4 years ago
Cultural-familial intellectual disability is a mental deficit in which no evidence of ___________ brain damage can be found.
MakcuM [25]

Answer: Organic

Explanation: Organic brain syndrome, is also know as organic brain disease, refers to any syndrome or disorder of metal function whose cause is alleged to be known as orgainc or physiologic rather than purely of the mind.

6 0
4 years ago
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