Determine whether each of the following is a characteristic of DNA, RNA, or both. Is single-stranded: Contains nitrogenous bases: Contains uracil: Contains adenine: Is double-stranded: Is made of nucleotides: Contains deoxyribose sugar:

Individuals do not compete directly for resources, but are prey for the same predator

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

Which structure in the cardiovascular system connect arteries to veins?