Guernsey
NA
Guinea
deforestation; inadequate supplies of potable water;
desertification; soil contamination and erosion; overfishing,
overpopulation in forest region; poor mining practices have led to
environmental damage
Guinea-Bissau
deforestation; soil erosion; overgrazing; overfishing
Guyana
water pollution from sewage and agricultural and industrial
chemicals; deforestation
Haiti
extensive deforestation (much of the remaining forested land
is being cleared for agriculture and used as fuel); soil erosion;
inadequate supplies of potable water
Heard Island and McDonald Islands
NA
Holy See (Vatican City)
NA
Honduras
urban population expanding; deforestation results from
logging and the clearing of land for agricultural purposes; further
land degradation and soil erosion hastened by uncontrolled
development and improper land use practices such as farming of
marginal lands; mining activities polluting Lago de Yojoa (the
country's largest source of fresh water), as well as several rivers
and streams, with heavy metals
Hong Kong
air and water pollution from rapid urbanization
Howland Island
no natural fresh water resources