Help needed!! What happens during coal formation after plants die and fall to the bottom of a swamp? (1 point) Carbon-rich coal is formed.

Heat and pressure build-up.

Sediment and rock pile on top.

Overall plant growth declines.

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody

Polar zones are cold and tend to be dry because of a pressure system of cold. low high

The primary organisms involved in the process bacteria and fungi.