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Elodia [21]
2 years ago
11

When did oxygen begin to accumulate in the atmosphere

Biology
2 answers:
maxonik [38]2 years ago
8 0
2.4 billion years ago the oxygen concentration in earth’s atmosphere increased suddenly from trace amounts to appreciable quantities
oee [108]2 years ago
4 0

Answer:

2.33 billion years ago.

Explanation:

Hope this helps <3

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3 years ago
Billy thinks evolution is slow and continuous. He believes in
Thepotemich [5.8K]

answer gradualism Explanation: gradualism refers to the type of evolution that takes a long time

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3 years ago
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Which statement is true regarding the two beakers and the contents of each? A) The beet core in beaker A is at equilibrium with
bazaltina [42]

Answer:

A) The beet core in beaker A is at equilibrium with the surrounding water

Explanation:

In the picture next to beaker A, there are to 0.4s next to weird symbols, I'm assuming it means the beet core and water are the same solubility.

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3 years ago
Which state is considered the “Mecca” of the natural revolution? AGRICULTURE*
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Texas

Explanation:

4 0
2 years ago
In nature, the elements oxygen and hydrogen are usually found as gases with the formulas O2 and H2. Why? Are they compounds? Are
Nitella [24]

Answer:

In nature, the oxygen element mainly occurs in gaseous form. While hydrogen  is also formed of two atoms and is also a colorless, odorless gas just like oxygen. But hydrogen is generally found as water.

Explanation:

Oxygen and hydrogen are commonly diatomic molecules, not compounds. Hydrogen is the most abundant and light of all elements in the earth. Hydrogen reacts with oxygen to form water. Hydrogen too forms parts of many compounds such as acids, hydrocarbons in organic compounds and so on. About 10% by mass of human body is composed of hydrogen. Oxygen, as it already known is the elements responsible for the survival of living organisms. It forms about 65% of human body by mass.

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