Which term best describes an organism that can contain up to five levels of organization to carry out life functions? multicellular unicellular abiotic bioticwhich characteristic of life best describes the process of homeostasis? responding to the environment reproducing growing and developing using energy

Which of the following explains why a tree is often used as a model to represent the principle of common descent

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

Which of your fossils are most likely heterotrophs? which of them are autotrophs? how do you know?