PLS HELP IT'S DUE IN A BIT

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.

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.