Which most likely contributed least to mexico city's air pollution?
a.
uranium
b.
coal
c.
oil
d.
natural gas

Monomers are the building blocks of larger molecules, called polymers. for example, proteins are composed of chains of amino acids that are linked together. cellulose is a polymer that makes up plant cell walls. cellulose is made from a chain of c6h10o5 molecules. which monomers are most likely used to produce cellulose? why?

What two conditions must be present for osmosis to occur?

The backbone of the double helix has an alternating molecules. what do you call these alternating molecule?