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Relative to agriculture, insects are usually
essential pollinators and predators for sustainable systems
which scientists classify species using an organisms physical appearance and genetic makeup
A species of lizard has gone extinct. This could be due to any of the following reasons except
increased genetic diversity within the species
Bullfrog tadpoles are often sold as fish bait, even in areas where they do not occur naturally. When people buy 10 of them and dont use them all, they often dump the remainder into the lake or river. this is an example of
biodiversity enhances human food security because it
is a potential source os new food items or new genetic varieties of existing foods
Removal of which of the following species will always result in the greatest changes in an ecological system?
a keystone species
Why do developing nations impose few or no restrictions on logging?
They are desperate for economic development
controlled burns would be used in forests
That are subjects to severe wild fires to remove fuel load and stimulate new growth
The area effect of the equilibrium theory of island biogeography suggests that
the number of species increases with the size of the island; all else being equal, larger island contain more species
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