Ocean ecosystems act as a carbon sink removing atmospheric carbon dioxide, which is
dissolved in the seawater. Which biological
process would then utilize this dissolved
carbon dioxide?
A. photosynthesis by oceanic fish.

B. photosynthesis by phytoplankton

C. aerobic respiration by marine mammals

D. anaerobic respiration by marine protozoa

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

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

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure