It would be a catalyst. They help increase the rate of chemical reactions.
When you take blood pressure, it is expressed in a fraction. The top number of that fraction is systolic pressure- the amount of pressure in your arteries during contraction of your heart muscle... I hope this helped! :)
Answer: The satellite must orbit at a speed of about 7,000 mph
Explanation: the higher the orbit, the longer the satellite can stay in orbit.