The circulatory system helps provide energy to the body when it A. carries carbon dioxide to the lungs.
B. carries oxygen and nutrients to the muscles.
C. carries wastes to the liver and kidneys.
D. carries hormones through the bloodstream.

Which of the four major uses is predicted to change the least by 2020?

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.