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Alekssandra [29.7K]
3 years ago
9

What are rocks made up of

Biology
1 answer:
Rina8888 [55]3 years ago
3 0
Grains of minerals , which are homogeneous solids formed from a chemical compound arranged in an orderly manner .
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When an action potential from a motor neuron arrives at the neuromuscular junction (NMJ), a series of events occurs that leads t
Strike441 [17]

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conformational change in troponin

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The troponin complex plays an essential role in the thin filament regulation of striated muscle contraction.

8 0
3 years ago
What are the cause and effect relationships driven by variations in the flow of energy into and out of Earth's systems?
ValentinkaMS [17]

A balance of this two process must be maintained in order to attain a constant earth temperature.

<h3>Energy flow in the earth</h3>

The earth in itself is a massive ecosystem. Energy flows into the earth and out of it. The only source of energy input to the earth is the sun. Also, energy is lost from the earth via re-radiation of energy in the form of infrared rays.

However, this inflow and out flow of energy affects the temperature of the earth. A balance of this two process must be maintained in order to attain a constant earth temperature.

Learn more about ecosystem: brainly.com/question/1673533

5 0
2 years ago
What step in the carbon cycle didn’t exist before the industrial revolution?
Sophie [7]

<u><em>Answer:</em></u>

<u><em>Combustion</em></u>

<u><em>Explanation:</em></u>

<u><em>The step in the carbon cycle didn’t really exist before the industrial revolution was Combustion</em></u>

<u><em /></u>

<u><em>please mark me brainliest <3</em></u>

5 0
3 years ago
Which is more luminous: a main-sequence A Star, or a white dwarf A star?
Mkey [24]

Answer:

A white dwarf

Explanation:

3 0
2 years ago
Which of the following is a scientific observation about the snake pictured below?
Fynjy0 [20]

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Adult cottonmouths are brown.

Explanation:

An observation is a fact that you can clearly see and don't have to guess if it is true or not.

4 0
3 years ago
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