veja

relating to ocean depths from 2000 to 5000 meters

energy derived from sources that do not use up natural resources or harm the environment

a region including the bottom of the sea and the littoral zones

of or concerned with the relations of climate and living organisms

the branch of biology concerned with the relations between organisms and their environment

biological theft

the branch of biotechnology that uses biological process to overcome environmental problems

toward or located in the north

composed of or containing or resembling calcium carbonate or calcite or chalk

a dense growth of cane (especially giant cane)

the organic circulation of carbon from the atmosphere into organisms and back again

United States biologist remembered for her opposition to the use of pesticides that were hazardous to wildlife (1907-1964)

the official conservation of trees and soil and rivers etc.

a sophisticated person who has travelled in many countries

provide with a covering or cause to be covered

of or relating to a cryptogam

remove the trees from

remove the trees from

violence carried out to further the political or social objectives of the environmentalists

tourism to exotic or threatened ecosystems to observe wildlife or to help preserve nature

an independent federal agency established to coordinate programs aimed at reducing pollution and protecting the environment

(ecology) of a lake or other body of water rich in nutrients and subject to eutrophication

a temporary fortification built by troops in the field

community of organisms where each member is eaten by another

community of organisms with several interrelated food chains

(Greek mythology) goddess of the earth and mother of Cronus and the Titans in ancient mythology

of the color between blue and yellow in the color spectrum

an environmentalist who belongs to the Green Party

the introduction of pesticides and high-yield grains and better management during the 1960s and 1970s which greatly increased agricultural productivity

archaebacteria requiring a salt-rich environment for growth and survival

having or characterized by excessive moisture

of or relating to the littoral area above the low-tide mark

of or relating to or living near lakes

of or relating to or living in still waters

the scientific study of bodies of fresh water for their biological and physical and geological properties

of or relating to or living in actively moving water

any of several low-growing Australian eucalypts

having or characterized by moderate or a well-balanced supply of moisture

a rich, frothy, creamy dessert made with whipped egg whites and heavy cream

United States naturalist (born in Scotland) who advocated the creation of national parks (1838-1914)

a tract of land declared by the national government to be public property

an organization concerned to preserve historic monuments and buildings and places of historical interest or natural beauty; founded in 1895 and supported by endowment and private subscription

the circulation of nitrogen

the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria

a long period of darkness and extreme cold that scientists predict would follow a full-scale nuclear war; a layer of dust and smoke in the atmosphere would cover the earth and block the rays of the sun; most living organisms would perish

an area of the ozone layer (near the poles) that is seasonally depleted of ozone

a region of the stratosphere that blocks UV radiation from the sun

the branch of ecology that studies ancient ecology

partially carbonized vegetable matter saturated with water

of or relating to or caused by light

someone who advocates the preservation of historical sites or endangered species or natural areas

a lack of sophistication

produced by or producing fever

capable of being used again

seawater that is discolored by large numbers of certain dinoflagellates that produce saxitoxin

relating to or located on the banks of a river or stream

any of several North American composite subshrubs of the genera Artemis or Seriphidium

of or relating to the region of the continental shelf (between the seashore and the edge of the continental shelf) or the marine organisms situated there

not covered with forest

forest or woodland having a mature or overly mature ecosystem more or less uninfluenced by human activity