4) according to the theory of mitochondria in cells today are the descendents of aerobic prokaryotes that used oxygen to generate energy. a) endosymbiosis b) ingestion c) mutualism d) parasitism

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.

Isolated volcanic peaks on the ocean floor are

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.