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artcher [175]
3 years ago
13

Near Earth’s surface, ____ occupies about 78% and ____ about 21% of the total volume of dry air. a. hydrogen; oxygen b. nitrogen

; oxygen c. oxygen; hydrogen d. nitrogen; water vapor
Biology
1 answer:
Paraphin [41]3 years ago
6 0

Answer: b.  Nitrogen; Oxygen

Explanation:

The air is a mixture of gases in the following percentage;

Nitrogen; 78%

Oxygen : 21%

Carbon(IV)Oxide : 0.03%

Argon : 0.9%

Others ( minute traces of Neon, Helium, Methane e.t.c) : 0.17%

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Answer: The water levels would rise because the frozen ice caps are putting their water into the ocean. When they melt all of the water that was previously frozen is going into the ocean and raising sea levels.

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2 years ago
1. How do populations of organism's influence each other? Give an example.
KonstantinChe [14]

Answer:

no2

Explanation:

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2 years ago
What is the term for the two upper chambers of the heart?
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5 0
3 years ago
What are the similarities and differences between prokaryotic and eukaryotic cells?
Gelneren [198K]

Eukaryotic

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  • Have multiple chromosomes
  • Usually multicellular
  • Animals and Plants
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Prokaryotic

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Hope this helps :)

3 0
2 years ago
Which of the following environments would not contain fossils
juin [17]

Answer:

as I know

Explanation:

<em>Igneous rocks, which form from cooling magma or lava, and metamorphic rocks, which have been altered by heat and pressure, are unlikely to contain fossils. The “soft” tissues of an organism, such as skin, muscles, and internal organs are typically not preserved as fossils.</em>

4 0
2 years ago
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