The American Council for an Energy Efficient Economy works to . a. ban the use of products that are not energy efficient b. fine companies that do not operate at peak energy efficiency c. invest in clean energy technologies that will strengthen the economy d. eliminate the use of energy obtained from the burning of coal within ten years

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.

Diffusion and osmosis are forms of passive transport

What is the farthest destination to date for a human spaceflight mission?