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Andru [333]
3 years ago
10

Please Answer, its for Earth Science

Biology
1 answer:
Kipish [7]3 years ago
4 0

Answer:

A.)

Explanation:

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What prevents organic molecules from forming on their own and remaining intact today?
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Answer:

Atmospheric oxygen is too reactive

Explanation:

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3 years ago
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Y_Kistochka [10]

the correct answer is Evaporation

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what is true of intercellular signals that do not go through direct connections between cells such as gap junctions? (A.They eit
adell [148]

The correct answer is option A. They either match up with a receptor molecule on the surface of the cell or enter the cell through the membrane.

The intercellular signals are the signals, which transfer the signals from one cell to the another and the intracellular signals are those signals, which carries message within the cell.

The intercellular signals may or may not be transferred through the gap junctions. The chemical signals are one of the type of the cell signals. The chemical signalling molecules generally have a receptor on the cells, where these molecules can bind and can be cause the activation of the cell. The chemical signals can also enter into the cells through active transport and facilitated diffusion. So, these type of transports does not go through the Gap junction.


6 0
3 years ago
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Where does cellular respiration take place?
VMariaS [17]

B. Mitochondria

The process of cellular respiration is essentially when oxygen and carbon transfuse themselves together to create carb on dioxide, which in turns creates energy.

The entire process is formed in the powerhouse of the cell, or in other words, the mitochondria.

A part of this question that may have been confusing is the answer, "lungs". Since respiration is correlated to the lungs, you may have been confused. However, this is a process that occurs within your cells, so on a small scale than your entire body.

6 0
2 years ago
Woolly mammoths became extinct thousands of years ago, while other species of mammals that existed at that time still exist toda
Kamila [148]

Answer:

faced a struggle for survival

Explanation:

The woolly mammoths became extinct, unlike the other species, because the woolly mammoths faced a struggle for survival due to changing of environmental conditions. Global warming is the main cause of extinction of woolly mammoth which destroy their habitats about 10,500 years ago. The environmental conditions are not favourable for them so they faced struggle for survival which causes extinction of woolly mammoth.

8 0
3 years ago
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