9781422274491

WORDS TO UNDERSTAND

accumulation the quantity of something that has increased over a period

aerosol a substance that is kept in a container under high pressure so that it can be sprayed

anthropogenic pollutants generated by human activities

biomass animal dung and other animal waste used as a fuel

compost a mixture made by the decomposition of plant and vegetable waste, to add in soil

deforestation cutting down a large number of trees

ecosystem a community of living organisms and their interaction with each other and their physical environment such as air, soil, and water

eruption to emit or discharge with a force

fermentation the process of breakdown of the food by microorganisms such as yeast

hydroelectric power electricity generated with the power of flowing water

Industrial Revolution a period of development in industries, agriculture, textile, and transportation

infrared a type of light that can be felt as heat but cannot be seen

magnitude of great extent, importance

permafrost a subsurface layer of soil that remains frozen throughout the year, usually in the polar regions

pesticide a substance that is used to kill those insects that damage crops

CLIMATE CHANGE: Problems and Progress

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