Oceans often get oil and toxic waste dumped into them as a bit of a "cheat" to cheaply dispose of waste. This harms the ocean life greatly. A leading cause of dumping into the oceans is the expense of getting rid of used oil. If a city were to allow residents to dispose of these things at no cost to them, there would be no need for people to dump it into the ocean. This will reduce the harm to sea life.
I'm pretty sure the answer is A.
Pioneer species. They are the usually the first to grow after an ecosystem has been destroyed(in this case by flood).
Answer:
Farming enabled people to grow all the food they needed in one place, with a much smaller group of people. This led to massive population growth, creating cities and trade.
Hope this helped a little <3
Peptide bonds connect amino acids.
Please correct me if I'm wrong!!! I'd be happy to fix it!! :)