____ can detect leak rates of about 1/4 oz per year.

A. Halide torches
B. Compressed air canisters
C. Electronic leak detectors
D. Mechanical leak detectors


Answer: C

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The figure above shows a _____.

a. first-class lever b. second-class lever c. third-class lever d. compound lever

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California condors are in the vulture family and eat mainly plants

a. True b. False Indicate whether the statement is true or false

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Pigs are excellent scavengers, but chickens are not

Indicate whether the statement is true or false

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Plants that bloom when the hours of daylight are longer are called:

a. Day-neutral plants c. Long-day plants b. Extended plants d. Short-day plants

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