Hormones what they do their target organ what organ produces

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because

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?