Describe how the position of the Earth Moon and Sun can be detected on Earth​

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.

Why should the united state be concerned about air pollution in china?

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z