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EnviroSci. chap 12

Intro to Enviromental Sustanablity chapter 12 test questions

QuestionAnswer
What type of farming has led to the destruction of mangroves? Shrimp Farming
What percentage of Earth's surface is ocean? 71%
Humans use freshwater primarily for ____? Agricultural Irrigation
Overpumping groundwater in coastal areas can cause ____ to move into aquifers, making the water undrinkable? Salt water
What fishing method involves dragging weighted nets across the ocean floor in an attempt to catch bottommost fish? Bottom-trawling
What ocean pollutant can enter the tissues of marine organism and make fish and shellfish unsafe for us to eat? Mercury
What percentage of Earth's water is available for drinking and irrigation? 2.5%
A 2003 study reported that ____% of large-bodied fish and sharks were lost in the first decade of industrialized fishing? 90%
Recent research that analyzed the content of commercial bottled water indicates that _____? Bottled water is no safer or purer then most samples of tap water.
Dams create a _____ from which we can get water for human use? Reservoir
One fifth of Earth's total freshwater supply is in _____? Groundwater
Data indicates that the present rate of freshwater consumption in most developed countries is _____? Unsustainable
____ pollution occurs when human activities raise water temperatures? Thermal
What is one of the major pollutant of groundwater? Fertilizers from agricultural fields.
Why was the irrigation of Soviet cotton farming operations a problem? It drained the Aral Sea increased the salt content of soils
Currently, the greatest ecological crisis facing marine food webs is _____? Overharvesting
Created by: ZenaAthena
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