The filmmakers in the movie King Kong land on the imaginary Skull Island, which is the home not only of the giant ape Kong but of a host of meat-eating dinosaurs as well. Setting aside the impossibility of an ape as big as Kong, from an ecological perspective, why could a real Skull Island never have existed, even when dinosaurs roamed the Earth?
Nitrogen (select all that apply):
a. is not a nutrient.
b. is transferred into the living world in nature through the actions of plants.
c. is transferred into the living world in nature through the actions of bacteria.
d. has been manufactured by humans since the early twentieth century.
e. exists in such low concentrations in some coastal waters that “dead zones” are the result.
Associate each term on the left with one on the right.
b. net primary production
material produced through photosynthesis
c. gross primary production
position in an ecosystem’s food chain
d. trophic level
organism that eats-plants
material accumulated through photosynthesis
There is a simple food chain in an eastern Oregon desert grassland: Mice are consumed by several species of snakes, which are consumed by hawks. The hawk is a __________ and occupies the __________ trophic level in this ecosystem.
a. tertiary consumer; fourth
b. secondary consumer; fourth
c. tertiary consumer; third
d. secondary consumer; third
e. primary consumer; third
The greenhouse effect is caused by:
a. incoming long-wave radiation that is trapped as short-wave radiation by the atmosphere.
b. short-wavelength light that is reradiated as long-wave radiation and is trapped by certain gases.
c. heat that is stored as short-wave radiation by rough surfaces of the Earth and then re-radiated as long- wavelength light.
d. cold air masses that mix with the warm gases and produce warm atmospheric gases.
e. reactions in the stratosphere between these greenhouses gases and ozone, producing long-wave heat.