b) Some vaccinations lose effectiveness over time. For instance, the vaccine for meningitis works for about five years before additional vaccination is required. In terms of specific immune system responses, why would a vaccine lose effectiveness over time? (4 points)​

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

The chemical form of energy that is useable by the cell to do work

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.