Polydactylism occurs . a. only in cats
b. only in humans
c. in less than one in 1000 children
d. more commonly in certain populations, such as the Amish.

The study of interaction between living organisms and their enviroment is called (a) phytogeography (b) ecology (c) phytosociology (d) ecosystem

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million