Which is an example of the depletion of a renewable resource? O pumping all the oil from an oil reserve O removing plants from an area, causing erosion of topsoil O transporting biodiesel to another location for use O losing electrical generation from solar panels on a cloudy day

Which of the following resources is currently considered renewable but may become a nonrenewable resource as Earth's population expands? a water b timber c coal d wind

The mountain pine beetle inhabits western North America, where it feeds on the inner bark of pine trees. In recent years, the beetles expanded hundreds of km north, because winters are warmer. Their eggs are kill ed by extreme cold events, which no longer occur Rising temperatures have also stressed the trees, making them more vulnerable to mountain pine beetle mortality. The mortality trees is now so extensive that the forests are projected to become a net carbon source instead of a carbon sink, releasing 200 megatons of carbon per year by the year 2020. The response of mountain pine beetles to warmer temperatures can be described as: () acclimation adaptation O radiative forcing range shift phenological shift

At which level of an energy pyramid would you expect to find the largest population of organisms? a primary consumers b producers c secondary consumers d tertiary consumers