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daser333 [38]
3 years ago
10

What caused England's Biston betularia moth populations to change over time from light colored to dark colored?

Biology
2 answers:
Blizzard [7]3 years ago
8 0
Change in allele frequency
anzhelika [568]3 years ago
5 0

Changes in alle frecencies I think

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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
2 years ago
Many plant cells have a single, large _________ __________ that is filled with fluid.
vlada-n [284]
<span>Letter A is the answer. Almost all plant cells have single large central vacuole. These large central vacuoles of the plant cells are filled with water and can take over 80% of its cell volume. This is surrounded by a single membrane called tonoplast. The role of the central vacuole is maintaining the plant cell's pressure.</span>
6 0
3 years ago
Read 2 more answers
In which organism is ddt least concentrated?
MrMuchimi

Answer: I would say D)

Explanation:Phytoplankton are the autotrophic components of the plankton community and a key part of oceans, seas and freshwater basin ecosystems. This is the least ddt and is concentrated.

4 0
3 years ago
2.
castortr0y [4]
I believe It is A because fissure eruptions are common on large volcanoes and also is built up by many layers of hardened lava, tephra, pumice, and volcanic ash.
8 0
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how does understanding the organization of the body, the urinary, and digestive systems help your career?
mestny [16]
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