World Population Growth
20,000
10,000
World
5,000
2,000
Asia
Africa
1,000
Europe
**
500
200
100
United States,
Canada, and Greenland
Mexico
Central America, Caribbean Islands,
and South America
50
Oceania (Australia and
nearby islands in the Pacific)
10
1950 1960 1970 1980 1990 2000 2010 2020 2030 2040 2050
PREVIOUS
based on the information on the graph, which region is expected to have the greatest increase in its population over the period shown?

1. an enzyme is considered a(n) because it speeds up a chemical reaction without being used up.2. in a catalyzed reaction, a reactant is often called a(n) . an enzyme is specific because the shape of its matches only particular reactants.4. an enzyme speeds up reactions by lowering the . the between an active site and its substrate often strains bonds and the reaction proceed.6. a( , which is often a vitamin, binds to an enzyme and plays a role in catalysis.7. high temperatures or changes in ph can an enzyme, causing it to lose its shape and biological activity.