Invasive species are dangerous because
A) they are almost all predators, disturbing ecological relationships by eating other species.
B) they carry viruses that spread disease in new ecosystems.
C) the native species have not evolved with and adapted to these organisms.
D) they tend to be secretive, going unnoticed in their new ecosystems.
C
You might also like to view...
The first judge to hear a case on a certain issue interprets the law, makes a decision, and sets a(n) ________, which will be used as an example in subsequent trials.
A. exemplar B. paradigm C. antecedent D. precedent
What marks the limit of rapid marine erosion?
A) Sea cliffs B) Wave-cut platforms C) Sea caves D) Blowholes
Which of these can be characteristics of severe thunderstorms?
A) wind speeds in excess of 58 mph B) hailstones one inch or larger in diameter C) tornadoes D) all of these
Surface high pressure zones are usually associated with:
A) stormy weather. B) converging winds. C) clear or nearly clear weather. D) ascending air.