Author Question: The first molecules of RNA were probably made A) on the surfaces of clays or other minerals B) ... (Read 22 times)

Mollykgkg · **on:** Jul 27, 2018

The first molecules of RNA were probably made

A) on the surfaces of clays or other minerals
B) deep within the earth
C) in the atmosphere
D) in space and then transported to the Earth in meteorites

Question 2

If we say that a material is opaque to ultraviolet light, we mean that it

A) absorbs ultraviolet light.
B) emits ultraviolet light.
C) transmits ultraviolet light.
D) reflects ultraviolet light.