Man’s impact on the environment

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Singapore treats contaminated water through advanced water purification techniques. It disposes waste through incineration and adopting the 3R approach of reduce, reuse, recycle. To reduce air pollution, Singapore enforces strict emission standards for vehicles and industries, uses cleaner fuels, and promotes the use of public transport.

Impact – influence, alter, effect

Positive and constructive Negative and destructive

1) Write two headings on the cardboard.
(Positive Impact) & (Negative Impact)

2) Look at the pictures and arrange them according to
what you think is positive and negative.

3) Remember, arrange based on what you see only.

End

Invention of Positive Impact
machinery Farming
and
Breeding
Medical Man-made
Advancement Materials

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Global Warming
Land Water Air

Man-made Materials
Farming & Breeding

New Machinery
Medical Advancement

Air Pollution Land Pollution

Factories
Automobile Deforestation
Improper Disposal
of rubbish
Global Warming

Burning of trees
Improper Disposal
of toxic waste

Water Pollution

Pesticides Oil Spillage

Improper disposal of rubbish Untreated sewage
into river

1. Air Pollution

Contaminants released into the atmosphere causing
harm to the environment and organisms.

Factories
Automobile

Effects of Air Pollution
• Causes respiratory problems.

• Causes acid rain when pollutants dissolve in the rain.

• *Release of chlorofluorocarbons(CFCs) causes
global warming.

2. Land Pollution

Pollutants or wastes are disposed on land causing
harm to the environment and the organisms.

Burning of trees

Improper Disposal Improper Disposal
of rubbish of toxic waste

Effects of Land Pollution
• Land unsuitable for use.

• Soil unsuitable for farming and breeding.

• Toxic wastes may seep into water bodies causing
water pollution.

3. Water Pollution
Contaminants are released into water bodies
causing harm to the environment and organisms.

Water bodies: Oceans, Rivers and Drains

Untreated sewage

Pesticides

Improper disposal of rubbish
Oil Spillage

Effects of Water Pollution
• Harms coastal wildlife (e.g. birds covered with oil)

• Harms or kills marine life.

• Causes stagnant water which encourages
breeding of mosquitoes.

1. List 2 positive impact of Science and Technology.

(i) Medical advancement/New machinery
(ii) Farming and breeding/Man-made materials

2. What are two sources of air pollution?
Factories and automobiles.

3. State two effects of land pollution.

(i) Land unsuitable for use/Toxic waste may seep into the
water bodies causing water pollution.
(ii) Soil becomes unsuitable for farming and breeding.

4. What type of gas when released into the atmosphere causes
global warming?

Chlorofluorocarbons/CFCs

Find out how Singapore does the following.

a) Treats contaminated water

b) Disposes waste

c) Reduces air pollution

Useful keywords to help in your research:
-National Environment Agency
-Singapore Environment Council

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Man’s impact on the environment

1. MAN’S IMPACT ON THE ENVIRONMENT

2. Impact – influence, alter, effect Positive and constructive Negative and destructive

3. 1) Write two headings on the cardboard. (Positive Impact) & (Negative Impact) 2) Look at the pictures and arrange them according to what you think is positive and negative. 3) Remember, arrange based on what you see only. End

6. Invention of Positive Impact machinery Farming and Breeding Medical Man-made Advancement Materials Negative Impact 0:01 0:02 0:03 0:04 0:05 0:06 0:07 0:08 0:09 0:10 0:11 0:12 0:13 0:14 0:15 0:16 0:17 0:18 0:19 0:20 0:21 0:22 0:23 0:24 0:25 0:26 0:27 0:28 0:29 0:30 0:31 0:32 0:33 0:34 0:35 0:36 0:37 0:38 0:39 0:40 0:41 0:42 0:43 0:44 0:45 0:46 0:47 0:48 0:49 0:50 0:51 0:52 0:53 0:54 0:55 0:56 0:57 0:58 0:59 1:00 1:01 1:02 1:03 1:04 1:05 1:06 1:07 1:08 1:09 1:10 1:11 1:12 1:13 1:14 1:15 1:16 1:17 1:18 1:19 1:20 1:21 1:22 1:23 1:24 1:25 1:26 1:27 1:28 1:29 1:30 1:31 1:32 1:33 1:34 1:35 1:36 1:37 1:38 1:39 1:40 1:41 1:42 1:43 1:44 1:45 1:46 1:47 1:48 1:49 1:50 1:51 1:52 1:53 1:54 1:55 1:56 1:57 1:58 1:59 2:00 End Global Warming Land Water Air

7. Man-made Materials Farming & Breeding New Machinery Medical Advancement

8. Air Pollution Land Pollution Factories Automobile Deforestation Improper Disposal of rubbish Global Warming Burning of trees Improper Disposal of toxic waste

9. Water Pollution Pesticides Oil Spillage Improper disposal of rubbish Untreated sewage into river

10. 1. Air Pollution Contaminants released into the atmosphere causing harm to the environment and organisms. Factories Automobile

11. Effects of Air Pollution • Causes respiratory problems. • Causes acid rain when pollutants dissolve in the rain. • *Release of chlorofluorocarbons(CFCs) causes global warming.

12. 2. Land Pollution Pollutants or wastes are disposed on land causing harm to the environment and the organisms. Burning of trees Improper Disposal Improper Disposal of rubbish of toxic waste

13. Effects of Land Pollution • Land unsuitable for use. • Soil unsuitable for farming and breeding. • Toxic wastes may seep into water bodies causing water pollution.

14. 3. Water Pollution Contaminants are released into water bodies causing harm to the environment and organisms. Water bodies: Oceans, Rivers and Drains Untreated sewage Pesticides Improper disposal of rubbish Oil Spillage

15. Effects of Water Pollution • Harms coastal wildlife (e.g. birds covered with oil) • Harms or kills marine life. • Causes stagnant water which encourages breeding of mosquitoes.

17. 1. List 2 positive impact of Science and Technology. (i) Medical advancement/New machinery (ii) Farming and breeding/Man-made materials 2. What are two sources of air pollution? Factories and automobiles. 3. State two effects of land pollution. (i) Land unsuitable for use/Toxic waste may seep into the water bodies causing water pollution. (ii) Soil becomes unsuitable for farming and breeding. 4. What type of gas when released into the atmosphere causes global warming? Chlorofluorocarbons/CFCs

18. Find out how Singapore does the following. a) Treats contaminated water b) Disposes waste c) Reduces air pollution Useful keywords to help in your research: -National Environment Agency -Singapore Environment Council

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Man’s impact on the environment

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