oral Sea Islands, Heard Island and McDonald
Islands, Norfolk Island
2 China - Hong Kong, Macau
2 Denmark - Faroe Islands, Greenland
16 France - Bassas da India, Clipperton Island, Europa Island,
French Guiana, French Polynesia, French Southern and Antarctic Lands,
Glorioso Islands, Guadeloupe, Juan de Nova Island, Martinique, Mayotte,
New Caledonia, Reunion, Saint Pierre and Miquelon, Tromelin Island,
Wallis and Futuna
2 Netherlands - Aruba, Netherlands Antilles
3 New Zealand - Cook Islands, Niue, Tokelau
3 Norway - Bouvet Island, Jan Mayen, Svalbard
17 UK - Akrotiri, Anguilla, Bermuda, British Indian Ocean
Territory, British Virgin Islands, Cayman Islands, Dhekelia, Falkland
Islands, Gibraltar, Guernsey, Jersey, Isle of Man, Montserrat, Pitcairn
Islands, Saint Helena, South Georgia and the South Sandwich Islands,
Turks and Caicos Islands
14 US - American Samoa, Baker Island, Guam, Howland Island, Jarvis
Island, Johnston Atoll, Kingman Reef, Midway Islands, Navassa Island,
Northern Mariana Islands, Palmyra Atoll, Puerto Rico, Virgin Islands,
Wake Island

MISCELLANEOUS
6 Antarctica, Gaza Strip, Paracel Islands, Spratly Islands, West
Bank, Western Sahara

OTHER ENTITIES
5 oceans - Arctic Ocean, Atlantic Ocean, Indian Ocean, Pacific
Ocean, Southern Ocean
1 World
271 total

Environment - current issues
This entry lists the most pressing and important environmental
problems. The following terms and abbreviations are used throughout
the entry:
acidification - the lowering of soil and water pH due to acid
precipitation and deposition usually through precipitation; this
process disrupts ecosystem nutrient flows and may kill freshwater fish
and plants dependent on more neutral or alkaline conditions (see acid
rain).
acid rain - characterized as containing harmful levels of sulfur
dioxide or nitrogen oxide; acid rain is damaging and potentially deadly
to the earth's fragile ecosystems; acidity is measured using the pH
scale where 7 is neutral, values greater than 7 are considered
alkaline, and values below 5.6 are considered acid precipitation; note
- a pH of 2.4 (the acidity of vinegar) has been measured in rainfall in
New England.
aerosol - a collection of airborne particles dispersed in a gas,
smoke, or fog.
afforestation - converting a bare or agricultural space by
planting trees and plants; reforestation involves replanting trees on
ar