Plants create oxygen through the process known as:
a. respiration c. transpiration
b. phototoxicity d. photosynthesis
D
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If the engine stops with a piston down in its cylinder and the valves are closed, the engine will be ____ and the crankshaft will not be able to turn.
A. overheated B. blocked C. hydrolocked D. cooled
Which two hormones pass through the circulation to the hypothalamus in the brain and influence the centers controlling food intake?
a. peptide YY and bombesin c. leptin and insulin b. insulin and amylin d. somatostatin and bombesin
In the landscape trade, all bulbous perennials that survive the winter as dormant fleshy storage structures, known to botanists as tubers, corms, rhizomes, and true bulbs, share what general name?
a. tubers c. corms b. bulbs d. tuberous roots
Brick was originally used in houses as the structural wall in as many as ____ layers, providing a very durable, if not well-insulated wall structure.
A. two B. three C. three or four D. five