How have people changed the physical landscape of Southeast Asia over the past 50 years? How is global climate change impacting these landscapes now, and how might it further impact them in the future?
What will be an ideal response?
The most substantive change occurring within the last half-century has been the widespread deforestation of tropical rainforests and hardwood forests. Also important has been the damming of many of mainland Southeast Asia's major rivers. Patterns of agriculture are bound to change with climate change, and this may accelerate the urbanization and economic transition.
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A. The United States B. Europe C. Asia D. Africa
Leaching of minerals from soils, especially calcium, magnesium, and potassium, can be increased when
A) the pH is lowered, especially from acid rain. B) salty irrigation water is used to flush out polluted soils. C) anti-microbial agents and nanoparticles contaminate soils. D) excess chemical fertilizer is used over many years.
In organic compounds, which of the following elements normally forms two covalent bonds?
A) carbon B) hydrogen C) nitrogen D) oxygen
Fossil fuels are formed when organic materials decompose and sediments are deposited on top of them. This process of sediment accumulation over time leads to __________ of the sediments
A. circum-Pacific belting B. flood control C. compaction D. polymerization