What role does the "brain" play in the female menstrual cycle?

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?

What type of graph presents information about how often certain or traits occur?

Which of the following do all living things have in common