Rising water vapor that meets cold air and turns into water droplets is known as:
a. dehydration
b. evaporation
c. precipitation
d. condensation

D

Explanation:

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

the backbone of the dna and rna compound is sugar phosphate.