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Ronch [10]
3 years ago
13

What gas made up the largest portion of earth's atmosphere for most of earth's history

Biology
1 answer:
kipiarov [429]3 years ago
7 0

Gases in Earth's Atmosphere. Nitrogen and Oxygen are by far the most common. Dry air is composed of about 78% Nitrogen (N2) and about 21% Oxygen (O2). Argon, Carbon Dioxide (CO2), and many other gases are also present in much lower amounts; each makes up less than 1% of the atmosphere's mixture of gases.

So therefore Oxygen is the gas that makes up the largest portion of the Earths Atmosphere.

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What primary event has occurred when a client experiences an ectopic focus?
Andreyy89
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3 years ago
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chubhunter [2.5K]

Answer:

Three examples of fossil fuels are:

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5 0
3 years ago
The scientific method provides the framework for all scientific research, including nutrition science. Choose the statement belo
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Answer:

1) d. observe phenomenon; generate hypothesis, conduct experiment, accept, reject, or modify hypothesis.

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d) accept, reject, or modify hypothesis: Based on the result of the experiment, the hypothesis can be rejected, accepted or even modified.

Question 2:

Case control study is a type of study design that uses or compares a group of affected individuals (by a disease) called CASES and unaffected individuals called CONTROL. In this case, A study that compares a group of people with diabetes (cases) to a similar aroup of people without diabetes (control) is an example of a case-control study.

7 0
4 years ago
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