Hypothesis - there will be a relationship between the amount of gas per kilometer and the speed the man is going. This is because , more speed requires more gas / power.
The variables are - the amount
Of gas , and the speed in which he is going
A) Mass and Weight
That's The Correct answer
Meiosis occurs in only the sexual cells of the body (sperm/eggs). It produces the sex cells. (eggs in females, and sperm in males)
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Natural indicators are important because they relate information about the acidity or alkalinity of a substance by demonstrating a shift in color which inform the observer about the pH level of the concerned material.
Natural indicators possess useful chemicals which relate information about pH level and because of this they are used in manufacturing of chemical indicators.<span />