Parasitic Flatworms do not have a digestive system because they do not need to digest there food. They just suck in nutrients already digested by the host they are in.
Two atoms that contain the same number of protons but different neutrons are isotopes of the same element.their masses are different but they react the same way chemically
Not sure about where did you collect the seeds.
But all of the F1 should be tall because the tall plants are dominant originally
F2 will have 3/4 to be tall, assuming this genetic case is determined by only one factor, like Aa
I think d/ few marine scientists is the correct one or not
