The image in a pinhole camera is
A. sometimes inverted.
B. always right-side up.
C. always inverted.
D. none of the above
Answer: C
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The home of the Rocky Mountain Institute demonstrates that
a. homes in sun-intense areas can do without central heating systems b. solar energy alone can heat a home c. little natural gas is needed to heat a home compared to coal burning furnaces d. energy efficient design and renewable energy alternatives can work in cold climates e. using energy efficient design is very expensive
The most populous and dominant country in Central Asia is
A. Kazakhstan B. Uzbekistan C. Turkmenistan D. Kyrgystan
Describe the evolution of fish in the Paleozoic. What will be an ideal response?
Assume that these categories represent a progression of degradation through time. In other words, if left unchecked, lightly degraded soil progresses into moderately degraded soil and so forth. Which continent poses the greatest concern for future loss of agricultural productivity?
a. South America b. North America c. Africa d. Europe e. Asia