What structure, found in
plant cells, uses the process
of exocytosis to remove
water?
a. nucleus
b. contractile vacuole
c. cell wall

Common commercial benefits of microorganisms include synthesis ofa. insulin.b. antibiotics.c. aspirin.d. antibiotics and aspirin.e. antibiotics and insulin.

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?

"your temperature analysis reveals a pattern with coldest temperatures located to the portion of the map."