Question

Scientific evidence, including the ability to determine the age of rocks, has led to the discovery that Earth’s continents were once one land mass that has since been separated. Which of the following best describes how this discovery might be useful in understanding evolutionary theory?

Answer 1

It showed how mountains could form a barrier that would be difficult for organisms to cross.

It explained what makes the continents drift around and isolate the organisms living on them.

It provided a set of rocks of known age to which others in different places could be compared.

It suggested that more recently evolved organisms might be found in the oldest rocks.

Answer 2

I'm pretty sure its B

Answer 3

@rajathsbhat

Answer 4

I agree.

Answer 5

Mhmmk i have another

Answer 6

sure

Answer 7

Scientists have observed that pythons have vestigial leg bones. They have also observed that snakes in general have more DNA sequences in common with four-legged geckos than they do with legless eels. What do these two observations have in common?

They both suggest that geckos evolved from snakes.

They both suggest that pythons are more primitive than other snakes.

They both suggest that snakes evolved from an ancestor with legs.

They both suggest that snakes evolved from geckos.

Answer 8

@rajathsbhat i think its A

Answer 9

pythons have leg bones. snakes in general have DNA that resembles a 4 legged creature.
^strong evidence to support C, i think.

Answer 10

because the choices say "they BOTH suggest...."
the first piece of data says nothing about snakes evolving from geckos.
which is the reason why i dropped A.

Answer 11

ohhhh ok I see what you mean :) Thank you

Answer 12

you're welcome :)