Answer: it produced oxygen as a waste product
Explanation: there was more free oxygen
Answer:
D. There will always be waste produced that can be used for energy.
Explanation:
Biomass energy is a renewable energy source because its does not have limited supply. We can always grow trees and crops, and waste will always exist.
B is the answer. But the changes would take over time
Answer:
A.
Explanation:
When freshwater is met with the ocean salt is diluted to the freshwater. Therefore organism that require little salt would be put at a threat.
