Which of the following is required for muscle contraction?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

One of the purposes of transcription is to produce a sequence of bases that

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.