Every winter morning when the sun is shining bright, a man living in Montana pulls back the drapes on a large south-facing window. In this way, he helps heat his home using ________
A) passive solar heating B) radioactive solar heating
C) conductive solar heating D) active solar heating
A
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This feature is one of the pieces of evidence that indicates that the boundary between the
Cretaceous Period and the Tertiary was marked by the impact of a large meteorite (bolide): a. evaporite d. sequence stratigraphy b. ichthyosaur e. iridium anomaly c. monotreme
Which is true of isotopes of an element?
A) They have different numbers of electrons. B) They have different numbers of neutrons. C) They have different numbers of protons. D) They have different chemical properties.
In 1962, Rachel Carson published Silent Spring, which dramatized the potential dangers of ________ to food, wildlife, and humans and eventually led to changes in the United States on their use.
Fill in the blank(s) with the appropriate word(s).
High tides that periodically occur during parallel alignment of the moon, sun and earth are called:
a. tidal waves b. spring tides c. neap tides d. lunar tides