Navassa Island:
NA
Nepal:
deforestation (overuse of wood for fuel and lack of
alternatives); contaminated water (with human and animal wastes,
agricultural runoff, and industrial effluents); wildlife
conservation; vehicular emissions
Netherlands:
water pollution in the form of heavy metals, organic
compounds, and nutrients such as nitrates and phosphates; air
pollution from vehicles and refining activities; acid rain
Netherlands Antilles:
NA
New Caledonia:
erosion caused by mining exploitation and forest fires
New Zealand:
deforestation; soil erosion; native flora and fauna
hard-hit by species introduced from outside
Nicaragua:
deforestation; soil erosion; water pollution; Hurricane
Mitch damage
Niger:
overgrazing; soil erosion; deforestation; desertification;
wildlife populations (such as elephant, hippopotamus, giraffe, and
lion) threatened because of poaching and habitat destruction
Nigeria:
soil degradation; rapid deforestation; desertification
Niue:
increasing attention to conservationist practices to counter
loss of soil fertility from traditional slash and burn agriculture