List reasons that might explain
a. the success of some invading species.
b. the failure of other invading species.
a. If an invading species has left behind parts of the ecosystem that kept numbers
in check, and no other species in the new ecosystem can affect the invader or prey on it, it
can successfully compete and prosper. Then it has a good possibility of its taking over and
having its population explode in the new environment.
b. If the new ecosystem has similar biota to the old, with similar species in similar niches,
and with predators of similar character, it is unlikely that the species will explode.
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Newton's Second Law of Motion tells us that the net force applied to an object equals its
A) mass multiplied by acceleration. B) mass multiplied by energy. C) momentum multiplied by velocity. D) mass multiplied by velocity.
Which scientists played a major role in overturning the ancient idea of an Earth-centered universe, and about when?
A) Copernicus, Kepler, and Galileo; about 400 years ago B) Aristotle and Copernicus; about 400 years ago C) Newton and Einstein; about 100 years ago D) Huygens and Newton; about 300 years ago E) Aristotle and Plato; about 2,000 years ago
Copper atoms have a greater tendency to be reduced than iron atoms do. Was this good news or bad news for the Statue of Liberty, whose copper exterior was originally held together by steel rivets?
A) This was good news since the steel rivets prevented the copper from eroding. B) Electrons will preferentially flow from the iron to the copper and then onto oxygen. Corrosion is thus accelerated around the interface of these two metals. C) This combination of metals have no effect on each other and that is why engineers chose to use them together. D) This combination of metals caused the copper to oxidize and turn green.
Neutron stars are supported by _____
a. hydrogen degeneracy pressure
b. neutron degeneracy pressure
c. neutron gas pressure
d. electron degeneracy pressure
e. hydrogen gas pressure