One type of bacteria reproduces once every 60 minutes. if there are 2 bacterial cells to begin with, then after 4 hours there will be a total cells.

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

What is the problem in this article? what solution does the article propose?