The features that distinguish a pond from a lake are A) smaller size and no temperature gradient
B) smaller size and a temperature gradient
C) larger size and no temperature gradient
D) larger size and a temperature gradient
PLS HELP ASAP!

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above

Which describes the changes in the earths motion?

In what ways does the study of human population differ from the study of wildlife ecology