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Vanyuwa [196]
4 years ago
9

How is climate change threatening the availability of sea ice?

Biology
1 answer:
nlexa [21]4 years ago
3 0

Answer:

The glaciers are melting and sea levels are rising

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15 points!
WINSTONCH [101]
D. <span>They all contain carbon as an important part of their structure. Hope this helps you!! =')</span>
5 0
4 years ago
Read 2 more answers
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
Infection occurs when the host is exposed to pathogens. what type of pathogen uses the cell's metabolism, and replicates itself
vladimir1956 [14]

Answer: Infection occurs when the host is exposed to pathogens. virus uses the cell's metabolism, and replicates itself while destroying the cell or changing the cell's genetic makeup.

Explanation:

  • A virus is a miniscule pocket of protein that contains genetic material.
  • Viruses pose a considerable challenge to the body’s immune system because they hide inside cells.
  • This makes it difficult for antibodies to reach them. Some special immune system cells, called T-lymphocytes, can recognise and kill cells containing viruses, since the surface of infected cells is changed when the virus begins to multiply.
  • Many viruses, when released from infected cells, will be effectively knocked out by antibodies that have been produced in response to infection or previous immunisation.
  • Antibiotics are useless against viral infections.  So antiviral drugs work differently to antibiotics, by interfering with the viral enzymes instead.

Hence virus are the pathogen that use the cell's metabolism. And replicate itself while destroying the cell or changing the cell's genetic makeup. viruses are so simple that they use their host cells to perform their activities for them

Learn more about virues :

brainly.com/question/17173059

#SPJ4

6 0
2 years ago
Why do you need to place a nylon membrane over the gel.
balu736 [363]

Answer:

The DNA is transferred to a nylon membrane because it is very difficult to work with

Explanation:

The DNA was transferred up into the membrane as liquid traveled up from the gel toward an absorbent material that was placed over the membrane.

3 0
2 years ago
Individuals with Down syndrome have an extra chromosome 21. This is an example of which type of chromosome disorder?
Lina20 [59]
The correct answer is choice B. Nondisjunction.

Nondisjunction disorder occurs when either the homologous chromosomes or the sister chromatids fail to disconnect properly during cell division. This failure results in daughter cells with an abnormality in chromosomes. 

I hope this helps you and have an awesome day!! :)
8 0
3 years ago
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