Contrast the views and philosophies of the economist who believes that substitutes can be found for resources with the ecologist who warns of limits to the amount of resources available.
What will be an ideal response?
Should include some of the following answers: Economist: focus on human resources (buildings, roads, labor); natural systems essential but externalized; manufactured capital is regarded as scarce and valuable; natural capital is regarded as plentiful and cheap; as one natural resource becomes scarce, a substitute will easily be found; based on supply and demand. Ecologist: focus on value of natural services; natural services are internalized; manufactured capital is very large (not really valuable) and puts stresses on natural resources; recycling is important; limited supplies of natural capital, which is valuable and often fragile.
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Roughly ____% of the biomass consumed by any consumer is stored in the consumer as flesh
A) 5 B) 10 C) 15 D) 25
Which of the following would not be true of a tropical rain forest?
a. low net primary productivity b. little ground level vegetation c. low levels of ground level sunlight d. high biodiversity e. high humidity
Caves can only form in limestone
Indicate whether this statement is true or false.
Scientists often depict their understanding of an organism's evolutionary ancestry in diagrams known as ________
A) hierarchical trees B) classification trees C) ancestral trees D) taxonomic trees E) phylogenetic trees