Need serious help on this , not the best at bio.

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

What molecules does hemoglobin decay into over time