Use the pedigree chart below to answer the following question.

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.

How many types of rock can form from the rock cycle

Which process in respiration happens first? a)pyruvate processing b)electron transport chain c)krebs cycle d)glycolysis