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I am Lyosha [343]
2 years ago
9

The movement of ions or molecules across a cell membrane from an area of lower concentration to

Biology
2 answers:
valina [46]2 years ago
6 0
D. Active transport
denpristay [2]2 years ago
3 0

Answer:

active transport

Explanation:

i just took the quiz

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The vatican archives maintain a vault where century's worth of old documents are stored in very high n2 levels to prevent oxidat
Vinil7 [7]

The Vatican archives stores multiple precious documents and books of the world. These old documents dating hundred of years are kept in high nitrogen levels, in order to prevent the oxidation of the paper (papyrus). The presence of the high level of inert nitrogen in the air in the archives prevents any kind of damage that may caused to the paper or the ink on those documents. This high level of nitrogen, however, may affect the health of the individual by decreasing the oxygen levels in the body.

Hence, the answer is 'the oxygen level will be decreased in the body'.

7 0
3 years ago
Why does air at 75% relative humidity and 30°C make your skin feel stickier than air at 75% relative humidity at 10°C?
bagirrra123 [75]
A warm air does always rise and cold air falls
5 0
3 years ago
Which of the following is NOT an example of nutrient reservoir
trapecia [35]

Answer:

D

Explanation:

The atmosphere is not an eycosystem

7 0
2 years ago
2. Describe the role of the following in maintaining a constant body temperature in humans:
Alex_Xolod [135]

Answer:

Muscles can also receive messages from the brain when the body temperature decreases. They respond by shivering. Shivering causes the muscles to contract and relax quickly. This process generates heat.

6 0
2 years ago
A. 150 million years ago <br> b. 140 million years ago <br> c. 120 million years ago
harkovskaia [24]

Answer:

c 1

b2

a3

Explanation:

There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. What traces there were may have been destroyed by geological activity. This is why scientists cannot be certain about how life began.

5 0
3 years ago
Read 2 more answers
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