What is a cell structure found in the eukaryotic cell but not in the prokaryotic cell
a. cell wall
b. cytoplasm
c. cell membrane
d. mitochondrion

What advantages does a pedigree have over a written passage?

What is the process by which biological parents pass traits such as hair type or eye color to their children

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?