Organisms in aquatic ecosystems can be categorized based on their method of mobility in the water. Which of the following would be categorized as benthos? A) ultraplankton because they float and perform photosynthesis B) jellyfish and krill because they float and feed on other organisms
C) turtles and fish because they swim and feed in the large open water
D) crabs and oysters because they move and live along the bottom surface

Been sitting here trying to take this test and don't know this answer! place the events of a feedback mechanism associated with body temperature in the correct order. ·nerve cells send message from skin to the brain ·body returned to normal temperature around 98.6 degrees f ·temperatures regulation center in the brain sends out signals ·body temperature exceeds 98.6 degrees f ·sweat glands throughout the body activate to cool off skin surface it is a 1 through 5 question in biology!