Biology Chap 9
Surface water pollution
Water is Essential to Life on Earth Earths water is mostly salt water (97.5%). The remaining 2.5% is fresh water, and most of the fresh water is frozen.
Water Resources and Water Pollution Chapter 9. Water Resources Water –Earths surface is covered by 71% water –Essential for life – can survive only a.
Objectives: TSWBAT identify types, causes, dangers, preventing, and treating water pollution. TSWBAT create solutions and actions to reduce water pollution.
Water Quantity and Quality. What is Water Pollution? any physical (temperature, oxygen), chemical (mercury), or biological (disease, sewage) change to.
Water pollution
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Dhanmondi lake water Pollution source investigation Report-2013
Water Pollution
Water pollution and their effects on the society
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