The principal of a high school needs to plan seating for commencement. The following two-way table displays data for the students who are involved in this year's commencement ceremony.

Which is an advantage to using nonrenewable resources? a. they can be cheaper. b.they can have a lower impact on the environment. c.they can be used up rapidly. d.they can contribute to global warming.

Who can you think of that has an a in their first name and a b in their last name?

In this food web, which group would increase in number if snakes were eliminated? a. producers b. decomposers c. primary consumers d. secondary consumers e. tertiary consumers