The students in mrs. smith's class tested various paper towel brands for strength. the students collected data after they each performed the same experiment with the different brands. when comparing results; bounty came out on top. how do we know the test results were valid?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

The chemical form of energy that is useable by the cell to do work

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers