All marsupials expect one group exist on the continent

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

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus