False, they are inexhaustible. If we were to use the resource as much as possible, it would exhaust and not be able to be used again.
Recombination occurs when two molecules of DNA exchange pieces of their genetic material with each other.
X^2 - 2x - 8 = 0
(x - 4)(x + 2) = 0
x = 4 or x = -2
The positive root is x = 4