The is responsible for maintaining homeostasis within any cell.

Could someone me with number one you

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

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?