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nadya68 [22]
3 years ago
15

Which step of an arson investigation involves ensuring that no one harms the evidence?

Biology
1 answer:
sergejj [24]3 years ago
5 0
B. Preservation- the act of keeping something free of damage
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Give the role of air in an ecosystem
Radda [10]

Sustain Life and Growth

Air consists one of the main life-sustaining gas called oxygen. Almost all living things breathe in and breathe out this air. Nitrogen and Carbon dioxide are also other gases that are vital for plants and their growth.

Combustion

Apart from this, air supports burning or combustion. The oxygen present in air help in burning of the fuels to basically carry out activities like cooking food, running industries and vehicles as well as generating heat and electricity.

Temperature Control

Another important aspect of air is that it helps in maintaining the temperature on the earth surface by circulating hot and cold air. Air acts as a conductor of heat as well. Even phenomena such as water cycle are dependent on air.

Supplier of Energy

Air which consists of energy is one of the main suppliers of energy. Living things are made up of cells and these cells extract oxygen within the blood to produce energy usually in the form of ATP. This biochemical generation of ATP is essential to maintain life on the earth.

Photosynthesis

Carbon dioxide, which is a component of air is used by plants during the process of photosynthesis. Here oxygen is also released by plants. And we already know how vital oxygen is.

3 0
2 years ago
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3) Look carefully at the following structural formula, and predict if this compound would turn black if heated
olga nikolaevna [1]

Answer:

It would turn black. H H 6. It would not turn black. does Briefly explain why you chose either a or b. Because it does not contain courbon or any such compound which change color upon heating

7 0
2 years ago
Cell drinking;cell eating;.Both are modeled here and are examples of __. A.osmosis B. diffusion C. endocytosis D. facilitated tr
Brut [27]
C) Endocytosis is the answer for this question because a cell will go out and find something it needs and then take it in. (i.e. cell eating or phagocytosis)
4 0
3 years ago
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What was most likely not present in the creating of amino acids
Bumek [7]
Hydrogen  
I hope this helps you!
4 0
4 years ago
Gestational diabetes occurs when a pregnant woman has high levels of blood sugar. Cells in the pancreas usually keep blood sugar
Ahat [919]

Answer:

environment controlling gene expression  

Explanation:

Gestational diabetes generally occurs in pregnant women. The sugar level in the bloodstream becomes little high than the normal range during pregnancy. But the glucose level returns to normal after child birth.

The pancreas secrets insulin which helps to lower the blood sugar level in the body. But during pregnancy, the placenta releases some of the hormones which dilutes the effect of insulin. This is known as insulin resistance. So now the pancreas secretes more of insulin to overcome this insulin resistance for the body. Now if a woman during pregnancy does secrete more insulin, the glucose level increases in the body and the woman develops gestational diabetes.

Gestational diabetes greatly depends upon obesity and the ethnicity of the women, but a definite genetic link has not been identified.

This it is a result of the environment control gene expression.

6 0
2 years ago
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