What are the MAIN processes through which oxygen is cycled? A
acid rain and greenhouse effect
B
nitrogen fixation and combustion
С
decomposition and respiration
D
photosynthesis and respiration

Which of the following is a common danger of commercial fishing?

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

What is the role of the phospholipid belayer in cellular transport in living cells