Water pipes sometimes burst at low temperatures because
A. the thawing process produces pressure on the pipes.
B. the ground contracts when colder, pulling pipes apart.
C. water contracts when freezing.
D. water expands when freezing.
Answer: D
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Which of the following statements about coral reefs and seamounts is most accurate?
a) Seamounts at the ocean surface grow away from coral reefs over time. b) Seamounts at the ocean surface grow towards coral reefs over time. c) Coral reefs at the ocean surface grow away from seamounts over time. d) Coral reefs at the ocean surface grow towards seamounts over time.
____ regulates about 5% of all hazardous waste produced in the United States.
A. Surface impoundments B. CERCLA C. Environmental justice D. RCRA E. Superfund
The study of life history as revealed by fossils is____________________. Fill in the blank(s) with the appropriate word(s)
Nunavut has only about 30,000 people in an area larger than any other province or territory in Canada as it comprises about one-fifth of Canada's land area.
a. true b. false