Aspecies of fish that eats all of the plants in the lake where it was introduced is an example of a(n) a. keystone species b. native species c. invasive species d. extinct species

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.

Organisms may contain up to five levels of organization within their bodies. which level of organization is shown by the liver? a. tissue b. organ c. organism d. organ system