Exam 20: Population Growth and Environmental Impacts

The maximum number of people an area can support without degrading the natural,social,cultural,and economic environment is called its carrying capacity.

The water table needs to rise to about __________ meters in arid and semi-arid areas in order to begin to increase salinization at the surface.

The concentration of population growth in the coming decades is expected to be in

Problems tend to occur in arid and semi-arid areas when the water table rises to about 2 meters below the surface as this allows salts to wick to the surface,increasing salinization of the soil.

If California were its own country,it would it rank ___________ among other countries economically.

It is estimated that roughly _______ people will live on Earth by 2050

Most of the population growth in the coming decades will occur in the developed nations.

Giant Pandas prefer the ______ Köppen climate.

Why did the Ancient Sumerians switch from growing wheat to barley around 2500 B.C.?

Australia has some of the oldest rocks on Earth; some are even 3.5 billion years old at the surface.

"Las Vegas" translates as __________ in Spanish.

Explain the origin of water rights of the Colorado River and the various cities that depend on the river.

Approximately 75% of the United States' crop yields have been lowered by salinization.

What are some steps that the government of China has set in motion to help protect the Giant Panda?

"Las Vegas" translates as "the oasis" in Spanish.

The __________ is the channel that transported water from the Colorado River to southern California in the 1950s.

Australia has some of the oldest rocks on Earth; they are approximately

The Earth has approximately __________ hectares of irrigated land.

Salinization is the process where soluble salts accumulate on the soil.

The name of the Giant Panda conservation area founded in the 1980s in China is the____________________.