B and D is out. It cant be A because heat of combustion is substance not compound. So the answer is D.
Explanation:
An electron current, the flow of electrons, contributes to an electric current since the electron 'carries' negative electric charge. ... The flow of ions (either positively or negatively charged) also contributes to an electric current in, for example, the electrolyte of an electrochemical cell.
hope it will work well?!
Answer:
Gill's
Explanation:
Fish's have many characteristics that differ from humans, and one of them is the gills.
Answer:
A. Treated water from the plant would affect communities downriver.
Explanation:
