When Mendel bred green-pea plants with yellow-pea plants, all the offspring had yellow peas. This means that the trait for yellow peas is
A. recessive.
B. heterozygous.
C. dominant.
D. homozygous.
Answer: C
Environmental & Atmospheric Sciences
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A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time, the acceleration of the ball is always
A) in the direction of motion. B) opposite its velocity. C) directed upward. D) directed downward.
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What methods do scientists use to determine the bathymetry of the ocean floor, and how do they work?
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How fast is North America moving away from Africa?
A) 3 cm/year B) 3 m/year C) 3 mm/year D) 3 km/year
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