Scientists believe that the earths core is made mostly of: A: silicon and oxygen
B: iron and nickel
C: granite and basalt
D: calcium carbonate

Select the correct answer from each drop-down menu. 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.