×some scientists study the way fossils and living organsims are distrubuyed or spread out on earth what is this study called

Paleontology is the study of the history of life on earth as based on fossils.

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

Tools newborns have for survival are called reflexes