The United States' first two national parks are
A. Glacier and Great Smoky Mountains.
B. Yellowstone and Everglades.
C. Olympic and Yosemite.
D. Yosemite and Yellowstone.
E. Great Smoky Mountains and Yellowstone.
Ans: D. Yosemite and Yellowstone.
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One disadvantage of a simulation model of an ecosystem is that it
a. does not take into effect interactions between organisms. b. does not take into effect nutrient availability. c. does not take into effect water availability. d. may not be accurate. e. may predict disastrous consequences.
Which of the choices lists the three phases of the ovarian cycle in the correct order?
A. follicular; luteal; ovulation B. follicular; ovulation; luteal C. follicular; proliferative; secretory D. luteal; secretory; ovulation E. luteal; ovulation; secretory
Store-bought hybrid tomatoes are very popular with consumers. Suppose you buy a tomato from the grocery store, collect seeds from it, and plant the seeds
If the seeds do not germinate, the seedlings fail to thrive, or the plants die quickly after sprouting, what reproductive isolating mechanism might be responsible?
Grasping hands and depth perception are important in coping with _____________ environment.
a. an arboreal b. a desert c. an aquatic d. a terrestrial