One of the most common diseases a pet gets intestate with, is a worm infection in the stomach. 'Tape worm' is one such worm which lives on the nutrients from the stomach of an animal. Tape worms are, therefore, (a) Saprophytes (b) Autotrophs

(c) Heterotrophs

(d) Parasites

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An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill