Apopulation of snakes has 900 individuals. they have a death rate of 30 per year and a birth rate of 20 per year. assuming 6 snakes migrate into the population and 3 migrate out of the population per year, how many individuals would there be after the first year? (to answer, write numerals in the box below.)

Rue or false siblings look simila rbecause they each have some traits of their parents.

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.