These two curves show ____.
?

A. ?large differences in standard deviations
B. ?similar means
C. ?skewed curves
D. ?standard normal curves


Answer: A

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?One of the first synthetic plastics was discovered by Dr. Leo H. Baekeland as a result of the chemical reaction of phenol and ____.

A. ?formaldehyde B. ?sulfur C. ?manganese D. ?selenium

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Certified compost provides food for the many good microorganisms in the soil

Indicate whether the statement is true or false

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If wavelength of light is changed from 400 nm to 800 nm, how much does the light energy change?

What will be an ideal response?

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In a No. 4 sieve, the dimensions of voids are approximately

A) 1 in. × 4 in. B) 4 in. × 1/4 in. C) 4 in. × 4 in. D) 2 in. × 2 in., giving an area of approximately 4.0 in.2. E) none of the above.

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