Water molecules are not found in a dna molecule.
The answer should be "Island finches resembled mainland finches, but were not the same species."
Answer: Wetlands, animal digestion, along with thermogenic sources such as oil and gas production.
Explanation:
Methane (CH4)
Methane comes from natural sources, such as wetlands and animal digestion, along with thermogenic sources, including oil and gas production. Natural gas is approximately 90% methane. Hope this helped!