The three major rock groups are ________, _________, and _________. Fill in the blank(s) with the appropriate word(s)
igneous, sedimentary, metamorphic
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The biologists' observations that the Carson Wandering Skipper populations had declined is an example of
a. data analysis b. identifying a problem c. performing an experiment d. proposing a hypothesis e. making testable predictions
A stratified ocean in the Late Permian could have been caused by ____
a. global warming b. global cooling c. ocean circulation d. increased downwelling e. decreasing population of trilobites
Tropical coral reefs support a very diverse and highly populated community, including calcareous algae whose
secretions help "cement" the coral reef together. In this community, the coral reef structure is the algae's ____________ and the algae's job of cementation is its ____________. Fill in the blank(s) with the appropriate word(s).
Projections are that there is more oil in the tar sands of Canada than in the underground reserves of Saudi Arabia.
a. true b. false