Answer:
<h3>The answer is 9.0 kg/L</h3>
Explanation:
The density of a substance can be found by using the formula

From the question
mass = 1.8 kg
volume = 0.2 L
We have

We have the final answer as
<h3>9.0 kg/L</h3>
Hope this helps you
I would say because the respiratory system brings in the oxygen for the body and the circulatory system moves it throughout the body with the blood
the answers is cacih2
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////// it is pepsinogen //////