Which of the following land use choices could lead to desertification?
allowing livestock to overgraze a region
farming a region's soil heavily for many years
removing all of the plants from a region

The response is the basis for vaccination. primary secondary tertiary none of the above

What processes would you expect to be key in the production of yogurt ?

Which of the following is true of metabolism in its entirety in all organisms? a) metabolism depends on a constant supply of energy from food. b) metabolism uses all of an organism's resources. c) metabolism consists of all the energy transformation reactions in an organism. d) metabolism manages the increase of entropy in an organism.