Answer:
Water and sanitation services contribute to greenhouse gas emissions. Choice of wastewater treatment technologies, improved pumping efficiency, use of renewable sources of energy, and within-system generation of energy offer potential for reducing emissions.
Explanation:
A is the one so she could spot the differnece with natural and the unnatrual decline
Answer: I say it is A sorry if I'm incorrect
Explanation:
I am typing this to get more answers for one of my tests good luck dawg