Suspended microscopic droplets and solid particles in the atmosphere that can reflect incoming sunlight are called ____.
A. aerosols
B. greenhouse gases
C. CFCs
D. photochemicals
E. smog particles
Answer: A
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Which of the following is an indication that humans are living unsustainably?
A. Other species are going extinct at an alarming rate. B. The number of species is actually increasing. C. The overall human population has dramatically decreased. D. The amount of land available to other species has remained the same.
Gasoline overflow from a car's full metal tank on a hot day is evidence that gasoline expands
A. more than metal. B. less than metal. C. about the same as metal. D. none of the above
Organisms with backbones are called ____
A) vertebrates B) invertebrates C) molluscs D) foraminifera
Which measurement indicates the average speed of air molecules??
a. ?pressure b. ?temperature c. ?density d. ?heat e. ?gravity