Explain how monomers and polymers are different from each other.

Monomers are small molecules, mostly organic, that can join with other similar molecules to form very large molecules, or polymers

Polymers are comprised of a chain of monomers through a process known as polymerization

Explanation:

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.