What is true about the theory of uniformitarianism? Question 1 options:

it says that the present is the key to the past

it was proposed by James Hutton

it helps explain Earth's past

all of the above

a:

by the combination of an unlimited number of elements

no statements shown

the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl