Earth's Systems #1:Question 2
This diagram illustrates how air moves from mountains into the
space left by rising warm air on the plains. This creates wind
that blows from the mountains across the plains.
Colder air flows
downhill under
rising warm
air
Plains
Mountains
What is the main source of energy for the wind on the plains?

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.