1.
the interaction of various populations living in the same environment
2.
the act of continuing to live
4.
a system of connected food chains
5.
an organism that eats food
6.
an animal hunted by another animal for food
7.
a group of living and nonliving things and their environment
8.
a change in appearance or behavior that organisms make to survive in an environment
9.
the total number of one kind of animal living in the same environment
10.
a sequence of how organisms use other organisms as food
