The unit for power in electricity should be watt. The power show how many energy transferred during a time and the SI unit would be joule per second.
The bill is charging for the amount of energy. The energy could be calculated by multiplying the power with time. In this case, the power in kilo watt will be multiplied by the duration in hour which make the kilowatt hour.
Carolus Linnaeus is considered to be the founder of the binomial classification system, and he <span>thought that resemblances among different species reflected the pattern of their creation.
Linnaeus studied the morphological and physiological similarities of organisms as well as tracing back their common ancestors. From these similarities, he named the organisms based using their genus and species name giving rise to the binomial nomenclature.
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Astronomy is the study of universe in a way, because it studies astronomical bodies and how they interact between eachother.
The objects they study can be comets, planets, stars, black wholes, asteroids, etc.
Hope it will,
BioTeacher101
(If you have any questions feel free to ask the in the comments)