Which of these statements best sums up evolution

Which of the following is the most likely result of converting forestland to urban development? a.the amount of land available for lumber production decreases. b.fewer trees are needed because cities are made mainly of concrete. c.people discover more efficient ways to grow trees. d. the price of lumber goes down.

The largest unit within which gene flow can readily occur is a

How do the sperm cells get from the stigma to the ovules?