Which of these factors creates a major problem for scientists studying a particular cycle of glaciation?
a. subsequent glacial advances disrupt sedimentary evidence
b. glaciers leave no physical evidence behind
c. human activity interferes with past glacial advances
d. changes in wind direction
e. changes in precipitation patterns
a
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What are the three major structures (shapes) of volcanoes?
a. composite cone, dome, and strato volcanoes b. shield, dome, and pipe-shape volcanoes c. shield, strato, and cinder cone volcanoes d. shield, cone, and neck volcanoes
About how many hours do Americans currently waste in sitting in traffic each year?
a. 1 billion hours b. 5 billion hours c. 10 billion hours d. 50 billion hours
What term describes the time it takes for a wave to move a distance of one wavelength?
a. wave frequency b. wave crest c. wave trough d. wave progression e. wave period
In the Demographic Transition Model which of the following statements is TRUE?
A) Stages 1 and 4 both have low death rates B) Stage 1 has a low birth rate but a high death rate C) Stage 4 has a low RNI D) Stage 3 has a lower birth rate than death rate E) Stage 2 has a low RNI