Which is true about fossil fuels?
a.
coal and natural gas came from swamp environments, while oil came from open oceans.
b.
coal came from swampy environments, while oil and natural gas came from open ocean environments.
c.
coal, oil, and natural gas came from swamp environments.
d.
natural gas and oil came from swamp environments, while coal came from open oceans.

Examine the false statement. compounds are the smallest unit of an element that occur most commonly in nature. select the rewording of the statement that is true. a: atoms are the smallest unit of an element that commonly occur in nature. b: molecules are the smallest unit of an element or compound that commonly occur in nature. c: molecules are the smallest unit of a compound that occur on the periodic table. d: compounds are the smallest unit of an element that occur on the periodic table