ES Quiz 11 Flashcards
(20 cards)
How large is the Great Pacific Garbage Patch?
2x the size of Texas
What causes hypoxic zones?
fertilizer runoff
Which of the following is a change in coastal environments during the past 300 years?
2 are correct
1 cause of land degradation;
agricultural practices
The acceleration of europhication in an aquatic system’
cultural eutrophication
the symbiotic algae that give corals their color;
zooxanthellae
___ of coral reef ecosystems could be lost in the next several decades
60%
What is the most threatened ocean area of coral reef destruction?
Southeast Asia
How large is the Great Pacific Garbage Patch?
2x the size of Texas.
What causes hypoxic zones?
fertilizer runoff
______________ play a critical role in both the hydrologic cycle and insediment dispersal and storage.
Dams
3 gases that comprise 99.9% of the gases in Earth’s atmosphere.
N2
O2
Ar
Acid deposition occurs when (2 gases) fall from the atmosphere as acid rain, sleet, snow, fog or dew.
sulfur
nitrogen
True concerning the origins of the reactants necessary for form acid rain?
Sulfur
In (4 countries), more than 80% of the sulfur deposited on land and waters is derived.
Norway
Sweden
Austria
Switzerland
The inverse log of the concentration of H+ ions in a solution
pH
Which rock type underlying aquatic systems are more sensitive to acidification?
crystalline
A mixture of ozone, sulfur and nitrogen gases, hydrocarbon gases and solar radiation creates _____.
photochemical smog
Why are human-induced smogs termed photochemical?
They are formed by chemical reactions in sunlight.
There are ___ known NATURAL sources of (VOCs).
many
