The ability to obtain energy via the oxidation of reduced sulfur compounds (e. g., H2S) is widespread among prokaryotes (both Bacteria and Archaea). Unfortunately, the nature of the major reaction end product has what effect on the immediate environment?

Dwarf galaxies are select one: a. relatively rare. b. not very bright c. mostly spiral shaped. d. none of these.

The body of water found at number 4 on the map above is the

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