Which two factors can both cause a population to increase ?
a. birth rate and emigration
b. birth rate and immigration
c. death rate and immigration
d. death rate and emigration

Environmental impacts on evolution : mastery test

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Across of blue x blue (both heterozygous) would result in