Which one is it need ASAP hh

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.