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Galina-37 [17]
3 years ago
8

The most plentiful gas in the atmosphere is …

Biology
2 answers:
frosja888 [35]3 years ago
3 0

Answer:

By far, the most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air.

Explanation:

Nimfa-mama [501]3 years ago
3 0

Answer:

Nitrogen

Explanation:

Nitrogen is the most abundant gas in the atmosphere followed by Oxygen and Argon.

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During a marathon the runner will lose a lot of water in... what?
NISA [10]

Answer:

The right answer is "sweat" or "perspiration" or "sweating" or "perspiring"  

Explanation:

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3 years ago
Why did the United States ban the use of DDT?​
stira [4]

DDT was used during second world war to control malaria among the troops and the civilians. Later, it was used as pesticide in agricultural and household practices. Due to its excessive use it entered into the food chain and its amount in the food crossed the permissible level. So, it was banned by United States.

6 0
3 years ago
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Select the correct words from the drop-down menus to complete the sentence. Metallic bonds are found in bronze between atoms of
konstantin123 [22]

Answer:

A metallic bond of copper atoms with metallic bond of tin atoms to form metallic bond.

Explanation:

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Metallic bonds are formed between metal atoms. When metal atoms unite, they share electrons among themselves and each one of them has valence electrons.

Bronze is an alloy of metals and it consist of copper and tin which makes them to be bonded by metallic bond.

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In the otter , sea urchin , kelp community, what tropic level are the otter ?
den301095 [7]

Answer:

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5 0
3 years ago
Why do experiments usually require a control?
zalisa [80]
Hey There!

Here is your answer:

Your answer is that a experiments should be controlled because the experiment could go out of control which could harm or hurt someone.


Also the definition of a controlled experiment is a part of the experiment that's not touched.

Ex: Water is your controlled experiment that's because our not doing anything to the water.

If you need anymore help just ask me!

Hope this helps!
4 0
3 years ago
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