What are four classes in the subphylum Vertebrata, and what are some examples of animals in each class?
What will be an ideal response?
Amphibia: frogs, toads, salamanders
Reptilia: turtles, snakes, lizards
Aves: birds
Mammalia: humans, cows, dogs
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In a sound absorption type muffler, what is sonic energy converted to?
A. friction, then heat B. mechanical vibration C. pressure D. noise
(Complete this sentenced) The elements of the PSM standard cover the things that ___________________.
Fill in the blank(s) with the appropriate word(s).
Dairy cows are found in every state in the United States.
Answer the following statement true (T) or false (F)
Technician A says CFC-12 (R-12) is no longer being manufactured in the United States. Technician B says CFC-12 (R-12) refrigerant can still be sold. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B