Which group of living things can move energy from consumers at the top of an energy pyramid back to producers at the bottom? * a. decomposers b. producers c. consumers d. nothing can move energy back to the bottom of an energy pyramid.

Although the two theories differ on the evolutionary path of dinosaurs, they agree that

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

Which of these parts of the membrane large moecules pass through it ?