What are reasons scientists use models?
to study objects far away
to study objects too large
to study objects too small.
to study objects easily found in a lab.
to study events that take place over long periods of time.

To study objects that are way too small

amber has allowed scientists to study dna that has been preserved over millions of years.

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?