28.Man's Impact On His Environment 🚩 ⭐👍
How man interact with Environment
man needs natural resources from environment
Positive Impact
negative impact
Depletion of National Resource
use metals and minerals
deforestation
Why deforestation?
once used, cannot be replaced
use fossil fuels
overfishing cause fish to be endangered or extinct
forest cut down for wood
to provide land for farming and building
allow people to dig up fuels and minerals
Consequence of deforestation
plants and animals may die due to burning
co2 is given off, causing global warming
No plants to hold soil together
soil erosion
Fewer trees to absorb water from ground
pollution
cause any substance to make the environment dirty or harmful to live in
can pollute land, air and water
Chemicals
Yue Qiao, used in appliances
untreated human waste cause water to be undrinkable
smoke by burning oil, coal etc.
haze, burning forests
acid rain, kill trees and aquatic organisms
global warming
co2 is trap in earth, cause earth to be warm
known as greenhouse effect, prevent earth from freezing
given off as a result of deforestation and 🔥of fossil ⛽
we can use 3rs, reduce, reuse, recycle 🔥 P221
conservation, reforestation
dispose rubbish, keep environment clean and take public transport
protect wildlife, conserve natural habitats and preventing overfishing
need resources to obtain energy, food and materials
produce furniture and paper
For farming and building
What is deforestation?
deforestation is the clearing of large areas of forested land by cutting and burning trees
causes many organisms like snakes and birds to lose their home
Soil blown away by wind
less water vapor, less rain, land becomes dry
Litter
chemicals washed into ocean and might harm ocean life
Yue Qiao cause ozone layer to deplete
Cigarette Smoke