How is the water supply for new york being protected?

Define dew point. i am writing this part to be able to ask the question

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.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?