the amount of people in the world divided by two

the tallest people in your house

all the inhabitants in a certain area

the amount of people in the world multiplied by two

when only one species is benefited

when only one species is benefited and the other is harmed

when both species are benefited

when one species is helping the other and the other species is not affected

an animal that is hunted and killed by another for food

an animal that naturally preys on others

an arch of colors formed in the sky in certain circumstances, caused by the refraction and dispersion of the sun's light by rain or other water droplets in the atmosphere

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically

the process in which mr jackson coaches the girls basketball team like a boss

the process in which a biological community is put into flames

the process by which the structure of a biological community evolves over time

the process by which an ecological climax community is created after a lava flow has occurred

when a species is found

when a species dies out completely

when a species comes back from the dead

when a species dies out, but establishes itself

a limitation or restriction

deserving strong condemnation

(of a person) wishing to do what is right, especially to do one's work or duty well and thoroughly

an inner feeling or voice viewed as acting as a guide to the rightness or wrongness of one's behavior

A situation that involves gaining one quality or aspect of something in return for gaining another quality or aspect

A situation that involves losing one quality or aspect of something in return for gaining another quality or aspect

A situation that involves losing one quality or aspect of something in return for losing another quality or aspect

A situation that involves gaining one quality or aspect of something in return for gaining another piece of evidence for a crime scene