Scientists discover that chemicals dumped in a river have caused trout, a type of fish, to die. What other living things will be MOST affected by the trout dying?

The hydrilla plant was introduced to freshwater habitats, like ponds and streams, in Georgia. Scientists found out that it crowds out the other water plants. It also uses up oxygen needed by other organisms living in the water. What MOST LIKELY happens when the hydrilla plants increase in a body of water?

Many chemicals are used to kill insects and protect plants. How could the removal of insects upset the balance of the ecosystem?

In the hills of North Carolina, several different species of wrens live in one large pine tree. This is possible because the wrens

Which BEST determines the number of wolves that can live in an area?

Kudzu vines grow by climbing and wrapping around trees. Trees covered by kudzu can die because they are starved of sunlight. What type of relationship exists between the trees and the kudzu growing on them?

Which BEST explains the importance of nitrogen in the cycling of energy and matter?

The two main processes by which plant cells absorb, release, and use energy are