What is a change that improves a species chance of survival ?

a. variation

b. adaptation

c. genetics

d. phenotype

Which of the following birds remained ancient looking in the miocene epoch? a. crows b. owls c. grouses d. none of the above

Which of the following is a cost of urbanization? a-cities can provide a high standard of living. b-cities are hubs of entertainment and education. c-paving over land changes the environment. d-job opportunities are greater in urban centers.

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.