A)before the bigbang.there was alot of nothing packed into nothing.matter and time.sapce and stars did not exist till then scientisys havent foind a way yet to know wjat was tjere before the big bang.so we cannot sah stars exploded or a black hole died.but whay we can say is thatba very dense pinprick.very very very very very dense pinprick of nothing ness expanded.and created matter as it heated up
The human body uses just 21 amino acids to make all the proteins it needs to function and grow. Because amino acids can be arranged in many different combinations, it's possible for your body to make thousands of different kinds of proteins from just the same 21 amino acids.
