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Ivenika [448]
3 years ago
7

What percentage of the atmosphere is Nitrogen gas N2

Biology
1 answer:
mihalych1998 [28]3 years ago
6 0

Answer:

78 percent

Explanation:

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

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As the moon revolves around Earth, it appears to change shape. The moon goes through phases during a period that lasts about one
lorasvet [3.4K]

Answer:

The correct answer is - the reflected light of sunlight changes as it moves around the earth.

Explanation:

The moon appears to change its shape during the revolving around the earth. This change in the shape of the moon takes place due to the fact that the moon does not have its own light and it reflects light from back to us on the earth.

The moon changes its shape on the basis of how much-reflected light or moon we can see and how much of the moon is facing the sun.

The correct answer is - the reflected light of sunlight changes as it moves around the earth.

8 0
3 years ago
Diatoms are mostly asexual members of the phytoplankton. Diatoms lack any organelles that might have the 9 + 2 pattern. They obt
Brrunno [24]

Answer:

Diatoms are mostly asexual members of the phytoplankton. Diatoms lack any organelles that might have the 9 + 2 pattern. They obtain their nutrition from functional chloroplasts, and each diatom is encased within two porous, glasslike valves. Which question would be most important for one interested in the day-to-day survival of individual diatoms?

C) How do diatoms with their glasslike valves keep from sinking into poorly lit waters?

Explanation:

Diatoms are some of the most important organisms living on earth because of its role on the oxygen production in the planet earth. The question "how do diatoms with their glasslike valves keep from sinking into poorly lit waters?" Because of the way their nutrition is obtained from functional chloroplasts and the way them encased within two porous, glasslike valves.

4 0
3 years ago
What conclusion can be made if a positive test was the result for any of the organic molecules for the water sample? This a ques
Ulleksa [173]

Answer:

Because some effects will occur.

Explanation:

The positive test which was the result for the organic molecules for the water sample showed that there is some change occurs in water sample by adding of organic molecules due to which the results of the test comes positive. If there is no change occurs in the water sample by adding some organic molecules so the results will come negative which means no effect.

8 0
3 years ago
Describe the function of the filamentous structures pictured below.
vovikov84 [41]

Answer:

The hyphae of fungus serve as the main mode of vegetative growth.

Mycelia and hyphae are use to absorb nutrients from other organisms.

Explanation:

Fungi are either unicellular or multicellular organisms that are found in moist, slightly acidic and low oxygen environment. They are heterotrophs and decomposers.

Their cell walls are rigid and are composed of chitin and glucans. They are characterized by long filamentous structure called hypae. The structures of hypae form the mycelia.

5 0
3 years ago
What kind of cross might tell you if a black guinea pig is Bb or Bb
olganol [36]
The answer is attached in a file read it.

4 0
3 years ago
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