Ddt was banned in the united states because it : did not kill harmful insects killed the plants it was sprayed on collects in animal tissue and poisons them was too expensive to produce

What are the result of when individual components in an organism interact with others to create noval stucture and function called

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?