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algol [13]
3 years ago
12

Which mineral would be found in greatest concentration in the plasma of the marathon runners?

Biology
1 answer:
Nata [24]3 years ago
4 0
The answer is iron. Research has shown an increase in serum iron concentreation in athletes and a concomitant decrease in magnesium ions. The increase in iron concentration is thought to be attributed to tissue injury from the strenuous physical activity. The decrease in magnesium is due to demand by the skeletal muscles.
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Read 2 more answers
B
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A scientific explanation for a set of observations that can be tested and is written with an "if/then" statement is referred to as hypothesis and is denoted as option B.

<h3>What is Hypothesis?</h3>

This is defined as the proposed explanation for a particular phenomenon before several experiments are conducted by others in different parts of the world to confirm its authenticity.

It employs the use of words such as "if/then" which shows its unproven status which is therefore the reason why it was chosen as the most appropriate choice.

Read more about Hypothesis here brainly.com/question/606806

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