3. What factors could not be measured or accounted for in the virtual lab that would happen in the
internal and external environment of a real garden?
4. If you completed the same investigation in a real garden, how would you refine the investigation to
account for the limitations of the virtual garden?

Please help..

i believe the answer would be b. hope it : )

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

i think the answer is a.keratin is the pigment responsible for skin color.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers