the physicological depedence on drugs is said to be A, withdrawl symptom B, drug abuse C, confusion D, loss of confidence​

The negative impacts of nonnative species generally outweigh the positive impacts

Wich level of organization includes all the other levels or organizations

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because