Ethanol is considered a renewable resource and a self-maintaining source of energy. It is used as a biofuel and produced through chemical treatments of crops such as corn and sugar cane. Which processes enables ethanol to be a self-maintaining renewable resource

Ethanol, derived from plant material, is a renewable energy source because the production and combustion of ethanol completes a cycle. The amounts of carbon dioxide and water that plants use are returned back to the atmosphere when ethanol, made from plant starch or cellulose, is combusted.

Explanation:

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.