Can someone answer this asap!! All I know is 188g is incorrect!

How does a hydroelectric power plant converts energy into energy.

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.