Which describes a comet? (select all that apply) They are larger than the Sun.

They have a nucleus.

They are not found inside our Solar System.

They have a tail when they get close to the Sun. (its science)

they have a nucleus

and they have a tail in fact they may have two tails, but I'm not sure if they are larger than the sun but for sure the second and last one

A comet's nucleus is in the center of its coma. A comet's nucleus is like a snowball made of ice. As the comet nears the Sun, the ice starts to melt off, along with particles of dust.

Explanation:

The above answer reinforced my answer and also was verified via Google.

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.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.