Compare the relative sizes of the planets to the sun‘s diameter

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

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from