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Burka [1]
3 years ago
15

After the three days, what happens in each test tube? why? what is necessary for rust to occur? how does this activity demonstra

te the fate of oxygen in earthâs early atmosphere, when iron in the oceans was still removing oxygen from the air?
Biology
1 answer:
Finger [1]3 years ago
4 0
The situation would be that, in a sealed tube,  there are 3 to 4 nails inside and a certain amount of calcium chloride was added. After three days, there will be no changes to be observed in the first tube since the oxygen is not enough to initiate a change and there is no presence of water. For the second test, the same situation is made but boiling water was filled in the tube. For this, no changes would still be observed since there is no moisture. For the last test, the same situation as the first but it is filled halfway with water. After 3 days, rust would be observed on the nails. In order for rust to happen, there should be water and oxygen. The oxygen in the early atmosphere of the Earth would react with iron present in the oceans thus producing iron ores.
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Answer:

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Explanation:

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Electromagnatic waves.

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Answer: hope this helps :)

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The motion of air masses also affects where a good portion of precipitation occurs. The air of cold air masses is more dense than warmer air masses. Therefore, as these cold air masses move, the dense air undercuts the warmer air masses forcing the warm air up and over the colder air causing it to rise into the atmosphere.

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6 0
2 years ago
Mark each statement True or False
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True Skeletal muscles are the muscles that move your bones; these

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4 0
2 years ago
Which of the following is NOT part of prokaryotic cells?
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Answer:

<h2>Nuclues</h2>

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Explanation:

Hope it is helpful.....

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3 years ago
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