What can we use to estimate the universes age
What will be an ideal response?
> The rate of expansion
Environmental & Atmospheric Sciences
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The single greatest threat to irrigated agriculture is
A) groundwater depletion. B) global warming. C) flooding. D) pollution from hydroelectric dam projects.
Environmental & Atmospheric Sciences
What is the leading source of renewable energy worldwide?
A. hydropower B. geothermal energy C. solar-cells D. biomass E. biodiesel
Environmental & Atmospheric Sciences
Calcite is an example of a silicate mineral
a. True b. False
Environmental & Atmospheric Sciences
Which description best fits a hose jacket device?
a. split metal cylinder b. soft rubber sheet c. stiff canvas patch d. wound plastic coil
Environmental & Atmospheric Sciences