Genetic analysis indicates that North America was originally populated by three or four different
waves of immigrants who
A. all came from Asia.
B. came from Asia and Europe.
C. came from Asia and Africa.
D. all came from Africa.
E. came from Africa and Europe.
B
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In mutualism
A. the mutualist is dependent on the host. B. the partners will not survive separately in many cases. C. a reciprocal benefit accrues to both partners. D. All of the choices are correct.
Day-neutral plants are:
a. short-day plants b. able to bloom when they mature, regardless of night length c. night-blooming plants d. triggered to bloom by cold weather e. long-day plants
6CO2 + 6H2O ® C6H12O2 + 6O2. In this reaction O2 is
A. a reactant. B. a product. C. a reactant and a product. D. neither a reactant nor a product.
Which of the following is referred to as the "death cap" mushroom?
A) Amanita phalloides B) Gyromitra esculenta C) Psilocybe cubensis D) Amanita muscaria E) Cortinarius gentilis