2. what is needed for food production to occur?

Sydney drew a flow chart to illustrate the nitrogen cycle. which labels best complete the flow chart? x: producers undergo photosynthesis. y: nitrogen compounds are released into the air. x: nitrogen compounds are released into the air. y: producers undergo photosynthesis. x: free nitrogen is in the atmosphere. y: producers absorb nitrogen compounds through their roots. x: producers absorb nitrogen compounds through their roots. y: free nitrogen is in the atmosphere.

What kinds of molecules can pass through the cell membrane without any problem?

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down