threats to biodiversity -- pollution
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name 5 ways land is polluted
• garbage • solid waste • waste paint • mercury • plastic bags
name 5 ways water is polluted
• oil spills • liquid waste • battery acid • pesticide • plastic bags
name 2 ways air is polluted
• burning fossil fuels - harmful emissions
what is point source pollution?
a pollution at a specific place from an industrial source
what is non point source pollution?
a water pollution that happens when water from precipitation picks up pollutants before entering a stream or lake
what are 2 negative impacts of pollution?
• alter / damage abiotic features of a habitat - poison / damage organisms
name 5 ways we can limit pollution
conserve burn less fossil fuels prevent environmental accidents use less toxins use biodegradable plastic bags
what is a pH scale?
a scale that describes the acidity level of a substance
what is the pH range?
0-14
what is pH between 0-7?
acid
what is pH at 7?
neutral
what is pH between 7-14?
base
burning fossil fuels creates which 3 gases (step one of acid rain production)
• carbon dioxide • sulfur dioxide • nitrogen dioxide
carbon dioxide, sulfur dioxide and nitrogen dioxide combine with ____ ____ to form ___ ____ in the air (step two of acid rain production)
water vapour / acid vapour
acid vapours _____ in the clouds (step three of acid rain production)
dissolves
acid rain occurs when ____ or ____ falls (step four of acid rain production)
rain / snow
what is the acid precipitation effect on a water ecosystem?
water becomes more acidic, which makes it difficult for fish to live. eventually, it will affect the food web
what are 3 effects acid precipitation on a land ecosystem?
• kills bacteria and micro organisms • damage trees and leaves • dissolve and wash away nutrient from soil