Figure 36.18
Use the figure above to answer the following question.
The structure identified with the letters "B" in the figure above is a(n) ____.
A. arterial wall
B. blood clot
C. venous wall
D. capillary wall
E. connective tissue
Answer: B
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Which statement describes the role of photosynthesis in an ecosystem?
a. Primary producers convert chemical energy to light energy. b. Primary consumers rely directly on light energy. c. Primary producers convert light energy to chemical energy as a service to the ecosystem, not for their own gain. d. Primary consumers rely on primary producers to make light energy available in a usable form. e. Primary producers are heterotrophs and thus make no contribution to the flow of energy into the ecosystem.
In which structure do fern spores form?
a. frond b. rhizome c. sorus d. rhizoid e. gametangium
You are inspired by your professor's lecture on human demography to decrease your ecological footprint. What steps would best help you accomplish this goal? Select all that apply.
A. Carpool, walk, or bike more often. B. Heat your home using the fireplace instead of natural gas. C. Eat meat-free meals at least one day a week. D. Trade in your sedan for an SUV you can use for camping. E. Live out in the countryside, even if your job is in the city. F. Start a high-protein diet that replaces refined carbohydrates with meat. G. Dress warmer and turn down the thermostat. H. Take a road trip to visit all the national parks.
Which pf the following explains why gases are termed "compressible" and liquids are not?
a) particles have fixed volume and are able to occupy the contained in which they are contained b) particles do not have much empty space between them, thus making them rigid c) particles have a large amount of empty space between them d) particles are held closely together by intermolecular forces