Look at the picture. It shows an experiment with embryonic stem cells. Explain what is happening in the experiment.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d