The fact that many different organisms on Earth have developed eyesight provides evidence for
A) cross-breeding
B) artificial selection
C) convergent evolution
D) genetic mutations
C
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He developed a system for predicting planetary positions that remained in use for some 1,500 years.
What will be an ideal response?
The weight of a 1200-kg car is supported equally by the four tires, which are inflated to the same gauge pressure. What gauge pressure is required so the area of contact of each tire with the road is 100 cm2?
A) 11.6 × 105 Pa B) 11.6 × 104 Pa C) 2.9 × 105 Pa D) 2.9 × 104 Pa
A simple pendulum of length 2.00 m has a mass of 100 g attached. It is drawn back 30.0° and then released. What is the maximum speed of the mass?
a. 1.14 m/s c. 2.29 m/s b. 4.58 m/s d. 1.62 m/s
The object in a ray diagram is perpendicular to the principal axis but does not have one end lying on the principal axis. The minimum number of rays that must be drawn in this ray diagram in order to determine the position of the image is
a. 1. b. 2. c. 3. d. 4. e. 5.