all the organisms that live in a particular area, the way they affect each other and their environment considered as a whole

the scientific study of the environment or the interrelation of living creatures and the way they affect each other

an area for birds and animals to live and to be protected from dangerous conditions and being hunted

an area in which animals, etc. are protected

a fuel that is found in nature and obtained from the remains of plants and animals that died millions of years ago, such as coal and gas

to remove unwanted or harmful substances from another substance

(of a natural resource or source of energy) existing in limited amounts and not replaceable after being used

rain containing a great deal of acidic chemicals, caused by air pollution, which can harm the environment

a permanent change in global or regional climate patterns, including temperature, wind, and rainfall

a large fire that spreads fast and causes much destruction

a very high wave or series of waves caused by an earthquake or eruption that are disastrous

containing or related to poison

a combination of smoke and fog that is considered a form of air pollution

the sudden outburst of lava and steam from a volcanic mountain

the action of removing the trees from an area completely

to make a place, substance, etc. dirty or harmful by adding dangerous material

the action or process of using a resource such as energy or food

a storm with heavy snowfall and strong winds

related to or using a temperature scale on which water boils at 212° and freezes at 32°

related to or using a temperature scale on which water boils at 100° and freezes at 0°

(of the climate) having a lot of moisture in the air, causing an uncomfortable and sticky feeling

a period in the summer during which wind blows and rain falls in India or other hot South Asian countries

the loud crackling noise that is heard from the sky during a storm