The independent variable is a variable that can be stood alone. So therefore, the independent variable would be how long it takes to parachute.
<h2>
Answer:</h2>
<h3>1. Hepatitis B </h3><h3>2. Levels of circulating antibodies against a certain antigen.</h3>
<h2>
Explanation:</h2>
<h3>Hope its help</h3>
The mitochondria produces energy to the cell while the ribosomes produce protei.
Explanation:
There is no man-made objects such as houses or cars that inhabit the atmosphere. Other than satellites of course but they don't count towards that.