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34kurt
3 years ago
11

Which of the following demonstrates an organ providing a force?

Biology
1 answer:
IRISSAK [1]3 years ago
3 0

Answer:

I would say the answer would be: 2. The heart contracts and expands to move blood.

Explanation:

The heart is forcing itself to contract and expand so it can move blood throughout the body. If I am wrong, let me know, but I believe that this is correct since it's a function of force.

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Which parts of Earth are most similar to the plate with an axis angle of 80°?
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Answer:

The answer is below

Explanation:

The lines of latitude run from the east to the west and is used to measure the distance from the north to the south of the equator. There are different lines of latitude such as the equator (0°), north pole (90° N), south pole (90° S).

The North and South poles are most similar to the plate with an axis angle of 80° because sunlight hits these points at least at an axis angle of 80.

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The pH is a measure of the concentration of the hydrogen ion (H+) in water. Highly acidic water has a very high H+ concentration
LUCKY_DIMON [66]

The hydrogen ion concentration of the following pH samples is as follows:

  • 7 (a neutral solution) = 0.845
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<h3>How to calculate hydrogen ion concentration (H+)?</h3>

The pH is a measure of the concentration of the hydrogen ion (H+) in water. This means that a relationship exists between H+ and pH of a solution.

The mathematical relationship between pH and H+ concentration ([H+]) is as follows:

pH = –log [H+]

This means that the hydrogen ion concentration (H+) of the following pH values can be calculated thus:

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  • log 5.6 (unpolluted rainwater) = 0.748
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Learn more about pH at: brainly.com/question/15289741

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2 years ago
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