What pressure do capillaries carry? What structural adaptions allow them to carry this pressure? How many layers do capillaries have? Are they thick, thin, or in between? Do they have valves?

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules