B2G GLOSSARY

ALL THE WORDS YOU NEED TO KNOW FOR B2G SINGLE SCIENCE, OCR BOARD - HIGHER TIER, BIOLOGY

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B2g
Acid rain ­ rain with a pH below about 6 formed when pollutants
such as sulphur dioxide and nitrogen oxides dissolves.
Exponentially ­ an increase that becomes more rapid with time.
Indicator species ­ the presence of a species that indicates the
quality of the habitat.
Ozone ­ a form of oxygen which can absorb ultraviolet light from
the Sun preventing reaching the Earth.
Pollution ­ the presence in the environment of substances that are
harmful to living things.
Resource ­ chemicals and resources that can be used for the
benfit of humans.

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