How was early Earth's atmosphere different from today's atmosphere?

The afrikaners are an example of a founder effect that occurs when a new colony is started by a few members of the original population and the random decrease in genetic variation is an example of

How does the molecular clock work? a. it analyzes the brain functionality of two different species.b. it examines and compares the physical characteristics of two different species.c. it illustrates relationships between two different species.d. it compares the number of mutations that exist in the dna of two different species.

Which of the following is not a potential result of deforestation?