Answer:
A
Explanation:
Mutualism is A symbiotic relationship between two species in which both partners benefit
A catalyst lowers the activation energy needed to start a reaction
Answer:
13896g
Explanation:
volume = 4.50×8.00×20.00 = 720 cm³
mass = density × volume
mass= 19.3 × 720 = 13896g
It extends 10 to 15 kilometers (6 to 10 miles) above the earth's surface depending on latitude and time of the year. The troposphere contains most of the atmosphere's water vapor.
