I believe alcohol addiction is related to males who's father's were alcohol addicted. this condition is due to hereditary DNA. Studies have proven more males than females suffer from this addiction.
They use a hygrometer. It measures relative humidity (the amount of moisture in the air) A psychrometer is an example of a hydrometer
The answer is option D. The trees
The independent variable is a variable that can be stood alone. So therefore, the independent variable would be how long it takes to parachute.
