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Debora [2.8K]
4 years ago
11

During which eon were the oceans made of liquid rock?

Biology
2 answers:
larisa [96]4 years ago
7 0

Answer:

The correct answer is option A. Hadean.

Explanation:

The Hadean eon is in the <u>Precambrian era. </u>

During this era the earth began to form from the gas and dust that circulated around the sun.

The oceans of this era were formed of liquid rock and the atmosphere was heavy, since it was composed of carbon dioxide with hydrogen.

Then the carbon dioxide was disappearing because the processes of subduction and water dissolution occurred in the ocean.

Given this information we can say that the correct answer is option A.

GenaCL600 [577]4 years ago
6 0

Answer:

the answer is A. Hadean

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Scientist are concerned about some of earths nonrenewable resources because
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Once these resources are used up, they cannot be replaced. Humanity would be in trouble because we are dependent on them to supply most of our energy needs.
3 0
3 years ago
Certain cells that line the stomach synthesize a digestive enzyme and secrete it into the stomach. This enzyme is a protein. Whi
kaheart [24]

Answer:

The correct answer is option B. exocytosis.

Explanation:

Exocytosis is a process that helps in transport secretory products to the plasma membrane through the cytoplasm in a cell. In this process, the materials are transported out of the cell with the help of vesicles.

Some of the examples of the exocytosis are the secretion of the enzymes, proteins, peptide hormones and antibodies from the cell linings of the stomach that help in the digestive process.

Thus, the correct answer is option B. exocytosis.

8 0
3 years ago
How can organisms build large polymers like proteins and starches?
andrey2020 [161]

Answer:

Explanation:

Most (but not all) biological macro molecules are polymers, which are any molecules constructed by linking together many smaller molecules, called monomers. If we were to string many carbohydrate monomers together we could make a polyacrylamide like starch. Proteins can be converted into energy, but your body prefers to use them for more essential jobs. Proteins build and repair every tissue in your body. They’re used to make hormones, enzymes, hemoglobin and antibodies, and they’re responsible for functions such as muscle contraction. The proteins in your body are made from 20 different amino acids. Starch or asylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycogen bonds. This polyacrylamide is produced by most green plants as energy storage.

polymer: A relatively large molecule consisting of a chain or network of many identical or similar monomers chemically bonded to each other.

3 0
3 years ago
Nitrogen is "fixed" by plants<br> O True<br> O False
LekaFEV [45]

Answer:

i think it is false. because symbiotic soil microbes do that

8 0
3 years ago
A student is creating a poster to share out with the class describing the chemical and physical properties and changes for alumi
AysviL [449]

The student put under the "physical changes" portion of the poster about aluminum is option "B".

<h3>What is the boiling point and melting point of aluminum?</h3>

The melting point of aluminum is 933.47 Kelvin, 660.32 degrees Celsius, or 1220.58 degrees Fahrenheit.

It's normal boiling point is 2792 Kelvin, 2579 degrees Celsius, or 4566 degrees Fahrenheit.

Thus, Options "B" aluminum met at 660 degree celcius.

To learn more about aluminum click here:

brainly.com/question/9496279

#SPJ1

5 0
2 years ago
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