Which statement best explains why a third domain, Archaea, was added to the original two domains of Bacteria and Eukarya? Question 19 options:

Scientists discovered that eukaryotes have cell walls.

Scientists discovered that eukaryotes are unicellular.

Scientists discovered that some prokaryotes live in extreme environments.

Scientists discovered that some prokaryotes have cell walls.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.