The process of cellular respiration begins with molecules of and ends with the production of .

A.
glucose, oxygen
B.
energy, glucose
C.
oxygen, glucose
D.
glucose, energy

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.

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?