What are two factors that increase population size and two factors that decrease populations size

In which specialized organ of the plant would these cells most likely be found

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?

Aprocedure done under controlled conditions to test a hypothesis is an inquiry.