What organisms in the lake produce oxygen that dissolves in the water?

i think that d. wind is the answer.   i missed the question when i answered a. currents.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.v

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time