What does nucleus do inside a cell? a. protective coveringb. stores food, water, wastec. control center that directs cell activitiesd. produces protein (on er)

Compare the composition of the moon's surface with the composition of the earth's surface.

Sort the examples by the type of diversity that they exhibit a park has 80 species of trees red, yellow, and orange bell peppers are all members of the same species individuals of the same lizard species have different mating strategies. five different bird species are at a bird feeder. genetic diversity species diversity

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land