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. bacteria fix nitrogen from the air. consumers eat other organisms. decomposers break down dead organisms. x y

Explanation:

• In the nitrogen cycle, free nitrogen (\(N_2\)) is abundant in the atmosphere (this would be at the start, so \(X\) can be “Free nitrogen is in the atmosphere”).
• Bacteria fix nitrogen from the air (convert \(N_2\) to forms like ammonia). Producers (plants) then absorb nitrogen compounds (like nitrates) through their roots (so \(Y\) is “Producers absorb nitrogen compounds through their roots”).

Answer:

X: Free nitrogen is in the atmosphere. Y: Producers absorb nitrogen compounds through their roots.