Describe two experiments and explain how each provided some evidence that led to newer models of the atom.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Plz ! having a smooth seeds is the dominant trait. having wrinkled seeds is a recessive trait. the offspring of two plants with smooth seeds, a. must have smooth seeds. b. may have smooth or wrinkled seeds. c. must have wrinkled seeds. d. have a 25% change of having smooth seeds.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?