View
92
Download
5
Category
Tags:
Preview:
Citation preview
Local and Environmental Issues/Problems
Affecting community
Major Causes
Kaingin Farming
Illegal logging
Conversion of agricultural lands to housing projects
Forest fires
Typhoons
I. DEFORESTATION - Rapid rate at which trees are cut down.
Effects
Soil erosion
Floods
Decrease in wildlife resources that will eventually lead to extinction
As a human population gets bigger, huge space is needed for shelter, for growing crops and for industries.
Cause: Deforestation
II. WILDLIFE DEPLETION –disappearance of wildlife species
EUTROPHICATION
major problem in lakes, rivers and ponds
Happens when the concentration of organic nutrients that comes from domestic garbage and thrown in a bodies of water, increases rapidly
III. Water Pollution
It usually happens when there is an increase in concentration of organic nutrients in bodies of water.
When does “FISH KILL” happen?
Toxic waste
Untreated sewage
Fertilizers run-offs from farm lands
Heavy metals, such as:
Lead
Mercury
cadium
WATER POLLUTANTS
Are toxic wastes produced in the making of paints, inks and electrical insulators
PCB or POLYCHLORINATED BIPHENYL
Is the build-up of pollutants in organism at higher trophic level in a food chain.
Through this PCB or polychlorinated biphenyl becomes concentrated in the body tissues of water organism
BIOLOGICAL MAGNIFICATION
IV. AIR POLLUTION
The trapping of heat by gases in the earth’s atmosphere
..\Videos\ENVIRONMENTAL SCIENCE\Global Warming , Green House Effect , Ozone Layer Video for Kids.mp4
GREENHOUSE EFFECT
An increase in the earth’s temperature from the rapid buildup of carbon dioxide and other gases
GLOBAL WARMING
Activities that destroy coastal areas:Deforestation, agricultural activities, and
mining activities
Dynamite fishing and muro-ami
Coastal areas conversion to beach resorts, residential areas
Overharvesting
V. Destruction of Coastal Resources
Known as ACID RAIN
Pollutants: Sulfur, nitrogen oxides – make rainwater even more acidic (with 5.6 pH or lower)
VI. Acid Precipitation
Means that a society should live under the carrying capacity of the environment
SUSTAINABLE DEVELOPMENT
1. Which of the following is NOT a major cause of Deforestation?
a. Illegal Logging
b. Kaingin Farming
c. Dynamite Fishing
d. Forest Fires
Let’s Take a Quiz
2. What do you call the rapid rate at which tress are cut down?
a. Air pollution
b. Water Pollution
c. Wildlife Depletion
d. Deforestation
Let’s Take a Quiz
3. What does PCB mean?
a. Polyconic Bonding
b. Polychlorinated biphenyl
c. Phylicodicated biphonyl
d. Philanchlorine bioxide
Let’s Take a Quiz
4. It happens when the concentration of organic nutrients that comes from domestic garbage and thrown in water?
a. Eutrophication
b. Biological Magnification
c. Deforestation
d. Acid Precipitation
Let’s Take a Quiz
5. It is the build up of pollutants in organisms at higher trophic levels in food chain?
a. Deforestation
b. Biological Magnification
c. Acid Precipitation
d. Eutrophication
Let’s Take a Quiz
6. It is known as ACID RAIN in which pollutants like sulfur and nitrogen oxides make water even more acidic?
a. Acid Precipitation
b. Eutrophication
c. Biological Magnification
d. Deforestation
Let’s Take a Quiz
7. It is a trapping of heat by gases in the earth’s atmosphere?
a. Global Warming
b. Greenhouse Effect
c. Air pollution
d. Water pollution
Let’s Take a Quiz
8. It is an increase in the earth’s temperature from the rapid build up of carbon dioxide and other gases?
a. Air pollution
b. Greenhouse Effect
c. Global Warming
d. Water pollution
Let’s Take a Quiz
9. Which of the following is NOT an air pollutants?
a. Oxygen
b. Carbon dioxide
c. nitrogen oxides
d. hydrocarbons
Let’s Take a Quiz
10. It means that a society should live under the carrying capacity of the environment.
a. Limiting Factors
b. Sustainable Development
c. Wildlife depletion
d. biodiversity
Let’s Take a Quiz
THANK YOU!
From: Sir RONELLE “CUTE” SAN
BUENAVENTURA
Recommended