Male birds have:
a. a W and a Z chromosome c. two Z chromosomes
b. two W chromosomes d. a Y and a Z chromosome
C
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?Hobs are often made from oil-hardened tool steels containing a high percentage of____.
A. ?nickel B. ?aluminum C. ?chromium D. ?copper alloy
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Trees from which lumber is obtained are divided into two broad categories?softwood trees and hardwood trees. Which one of these types is more abundant in North America and which one is faster growing?
What will be an ideal response?
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A specially engineered roof frame is required when using _____
A) composition shingles B) composition rolled roofing C) slate roofing D) premanufactured membrane roofing
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_____ is creating technical drawings.
A. Designing B. Drafting C. Computer-aided drawing D. Modeling
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