Dinosaurs are examples of ____
a. fish
b. invertebrates
c. amphibians
d. reptiles
e. mammals
d
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A study of jet contrails following the grounding of commercial flights after the September 11, 2001 terrorist attacks found that
A) contrails have a very limited effect on the Earth's energy budget. B) contrails reduce diurnal temperature ranges in regions with a high density aircraft. C) contrails contribute more to cloud-albedo forcing than cloud-greenhouse forcing. D) contrails are difficult to distinguish from natural cirrus clouds.
The Cordilleran orogeny was distinguished by three phases: ________ orogeny, ________
orogeny, and _________ orogeny. Fill in the blank(s) with the appropriate word(s).
The atomic number is equal to the number of ____.
A. atoms in a molecule B. protons in an atom C. neutrons in a molecule D. electrons in an atom E. protons, electrons, and neutrons in an atom
The traits that characterized the now generally rejected classification of ________ are not place specific
A) ethnicity B) race C) nationality D) citizenship E) voting rights