A water wheel is a machine for changing the energy of flowing water into mechanical energy which can be used to power tools.

What happens if the water flow increases?

A) The rotation of the water wheel decreases, mechanical energy increases.
B) The rotation of the water wheel decreases, mechanical energy decreases.
C) The rotation of the water wheel increases, mechanical energy increases.
D) The rotation of the water wheel increases, mechanical energy decreases.

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

Along what geographical feature are most of the oil producing regions located

Which label correctly identifies what x represents in the concept map?