The pesticide DDT was used to kill mosquitoes for many years. DDT into the bodies of water, moved up the food chain, and build up in the tissues of fish. One female bald eagles eat this fish, they produce eggs with very thin shells. The eggs broke when the bald eagle sat on their nests. The US government banned the use of DDT in 1972. Which of the graph shown most likely shows how the ban of DDT affected the board equal population?

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