Your kidneys, the main organ of the excretory system, work with the system, to filter liquid waste from your blood. a) circulatory b) digestive c) immune d) nervous

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.

Dna is colied into chromosomes in a cell

Where can you find prokaryotic and eukaryotic cells?