Environmental Science Worksheet-7
(a) Desalination (b) Salination
(c) Purification (d) Contamination
(a) A small pond that is filled with water.
(b) An underground layer of rock or soil that is filled with water.
(c) A fresh water lake.
(d) A salt water lake.
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Environmental Science Worksheet-8
(a) Fluoride (b) Chlorine
(c) Iodine (d) Antibiotic medicine
(a) Wind and Earth's temperature
(b) Wind and Earth's rotation
(c) Ice cap and Earth's rotation
(d) Volcanoes and ocean's surface
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