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Amiraneli [1.4K]
3 years ago
14

Although _[blank]_ makes up 78% of the Earth's atmosphere, it is not directly usable by most living organisms.

Biology
2 answers:
nekit [7.7K]3 years ago
7 0

Nitrogen gas is the answer.

Hope this helps.

svet-max [94.6K]3 years ago
3 0

Although <u>Nitrogen Gas</u> makes up 78% of the Earth's atmosphere, it is not directly usable by most living organisms.

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anyanavicka [17]

Answer:

I believe the answer is C

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The ph of the water in several lakes in norway and sweden had decreased to below 5.0 due to an increase in acid rain. What is mo
arsen [322]

Answer:

What will most likely happen in these lakes is that there will be a decline of several fish populations. The correct answer is A.

Explanation:

The options attached to the question are given below:

A. The decline of several fish populations

B. An increase in the number of fish.

C. An increase in the number of primary producers.

D. Increased predator- prey relationship.

The fishes, just like any other living organisms has ideal body temperature and pH at which they act best. The ideal pH for fish living in lake water is between 6 and 8. If the pH is reduced below this value then the water will become acidic and this will be toxic for the fish population living in the lakes. Therefore, those fish that can not cope will die and there will be a decrease in the fish populations.

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3 years ago
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Dmitry [639]
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5 0
3 years ago
The two insulated beakers shown contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature
Sati [7]
The temperature of the Beaker B insulated contains a lower amount of identical liquids and the copper rod which won't keep the system going because it can't with stand to keep a breaker going at a low Celsius of 50 degree 30 degree Celsius less than Breaker A
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In cardiac muscle In cardiac muscle an action potential spreads throughout the Z discs. intercalated discs connect the muscle fi
Anastasy [175]

In cardiac muscle

a. an action potential spreads throughout the Z discs.

b. intercalated discs connect the muscle fibers together.

c. calcium enters the cell from storage chambers called intercalated discs.

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b. intercalated discs connect the muscle fibers together.

Explanation:

Intercalated discs are components of the muscles found in the heart(cardiac muscles).

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