Define coefficient to show its scientific meaning

In science, a coefficient is a constant term related to the properties of a product.  In chemistry, when you see a number in front of a chemical like 2H2o, you're looking at the coefficient.

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects