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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
rain that contains large amounts of harmful chemicals as a result of burning substances such as coal and oil	ACID RAIN
a substance contained as an aerosol in a spray can	AEROSOL SPRAY
harmful substances in the air, often consisting of waste from vehicles or industry	AIR POLLUTION
no more individuals of some species alive anywhere in the world - the species has died out.	ANIMAL EXTINCTION
the cutting down of trees in a large area, or the destruction of forests by people	DEFORESTATION
a long period when there is little or no rain	DROUGHT
the relationships between the air, land, water, animals, plants, etc., usually of a particular area, or the scientific study of this	ECOLOGY
a type of animal that might stop existing because there are only a few of that type alive	ENDANGERED ANIMALS
not now existing	EXTINCT
a situation in which there is not enough food for a great number of people, causing illness and death, or a particular period when this happens	FAMINE
to cause to fill or become covered with water, especially in a way that causes problems	FLOOD
a gradual increase in world temperatures caused by gases such as carbon dioxide that are collecting in the air around the earth and stopping heat escaping into space	GLOBAL WARMING
an increase in the amount of carbon dioxide and other gases in the atmosphere, that is believed to be the cause of a gradual warming of the surface of the earth	GREENHOUSE EFFECT
a rule, usually made by a government, that is used to order the way in which a society behaves	LAWS
to turn from something solid into something soft or liquid, or to cause something to do this	MELT
noise, such as that from traffic, that upsets people where they live or work and is considered to be unhealthy for them	NOISE POLLUTION
catching too many fish in an area of the sea, so that there are not many fish left there	OVERFISHING
a layer of air containing ozone high above the earth that prevents harmful ultraviolet light from the sun from reaching the earth	OZONE LAYER
a forest in a tropical area that receives a lot of rain	RAINFOREST
to sort and collect rubbish in order to treat it and produce useful materials that can be used again	RECYCLE
an unnecessary or wrong use of material or things that are no longer wanted or needed	RUBBISH WASTE
a mixture of smoke, gases, and chemicals, especially in cities, that makes the atmosphere difficult to breathe and harmful for health	SMOG
presence in groundwater of toxic chemicals and biological agents that exceed what is naturally found in the water and may pose a threat to human health.	WATER POLLUTION
gases ejected from an engine as waste products	EXHAUST FUME