Please helps .-. which of these events had at LEAST effect on the history of life on earth?

A. Global climate change

B. Mountain building

C. Changes to the genetic code

D. Meteor or asteroid impacts

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

What happens when the cell copies its chromosomes

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?