What sphere is water in? A. Hydrosphere

B. Biosphere

C. Atmosphere

D. Geosphere

What came first the elephent or the crocodile

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Explain why biological control methods are generally environmentally superior to chemical pest control methods.