Bacteria move using a tail like structure called flagellum .
The answer is A. The heart pumps blood through the circulatory system, and the lungs help the oxygen transport throughout the respiratory system. :)
1, as the energy comes from the sun, then plants get it through photosynthesis, and finally the consumers obtain the energy from consuming animals on a lower trophic level than themselves. energy cannot flow down the food chain, only up.
