If anyone can make a small essay resume or something like that about selective breeding and natural selection (like 5 lines) I will...? I dunno :p just help me

Which element provides strength to the exoskeleton of clams and oysters

Which of the following is an advantage of solar energy?

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote