In general, when one views a food chain, they can expect the biomass of herbivores (organisms that eat plants) in an ecosystem to be about _____ of the biomass of the plants and other photosynthetic organisms in the ecosystem.
a. 10%
b. 80%
c. 50%
d. 25%
e. 90%
Answer: a. 10%
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Which of the following is NOT a challenge facing Caribbean tourism?
A) capital leakage where most the profits rarely remain in the local economy B) a trend of Americans to either opt for domestic beach resorts and/or more exotic locales such as Costa Rica or the Persian Gulf C) the vulnerability of the industry to external market forces (such as a 9/11 style attack or a global recession) that would lead to a dramatic drop in international arrivals D) geopolitical instability throughout the Caribbean Basin which has proven to be detriment to tourism E) a trend towards cruise ship visits which limits tourist interaction ? both cultural and economic ? with the local islanders
Use a piece of string and the scale bar on the map to measure the river from the north end of the map to the south end. How many miles did you measure? What is the straight-line distance from the river at the north end of the map to the south end in miles?
What will be an ideal response?
A dome-shaped mass of glacial ice covering less than 50,000 km2 is a(n) ____________________
____________________. Fill in the blank(s) with the appropriate word(s).
Many magmas are generated when solid rocks are carried to higher levels in the earth by flow and partially melted by decompression melting
Indicate whether the statement is true or false