Human activities like deforestation, improper garbage disposal, and overuse of fertilizers and pesticides can harm Earth's land, water, and air in several ways: 1) Cutting down trees without replanting leads to forest denudation, which increases the risk of soil erosion and landslides during heavy rains. 2) Throwing garbage improperly pollutes soil and water, reducing the soil's fertility and making the water unsafe. 3) Overuse of chemicals from farming contaminates soil and water supplies. 4) Smoke from vehicles, factories, and burning of plastics and garbage pollutes the air. 5) All of this pollution can spread diseases and harm both humans

1. HUMAN ACTIVITIES
THAT AFFECT EARTH’S
LAND AND WATER.

3. • Some human activities bring about changes on
the surface of the Earth.
• When it rains, part of the soil is carried away by
water. Heavy rains cause floods. Floods carry away
the soil.

4. EFFECTS OF HUMAN ACTIVITIES TO
EARTH’S LAND AND WATER
Look at this picture
Forest denudation happens when many trees are cut down in
the forest.

5. EFFECTS OF HUMAN ACTIVITIES TO
EARTH’S LAND AND WATER
Soil Erosion
• People cut down trees in the forests for their
needs. Most often, people do not plant new trees.

7. • Too much cutting down of trees results to forest
denudation. When people do not plant new trees,
floods can occur when heavy rains come.

8. • This is because very few trees are left to hold
water underground. Floods can wash away the
soil. This is called soil erosion.

9. • Landslides can also happen since few trees are left
to hold the soil together. Landslide can harm
people living at the base of the mountain and on
its slopes

10. EFFECTS OF HUMAN ACTIVITIES TO
EARTH’S LAND AND WATER
Soil Pollution
• Many human activities pollute soil. Pollution harms the
productivity of the soil. People throw garbage and
wastes improperly. Garbage destroys the fertility of the
topsoil. Plants cannot grow on soil covered with
garbage.

11. Garbage anywhere cause soil pollution.

12. • Over use fertilizers and pesticides by farmers to increase
harvest destroys the quality of the soil.

13. Rice fields and other agricultural lands are converted into
residential and commercial areas.

14. Some people convert farmlands to livestock and poultry
farms that makes lands exposed to agents of soil erosion.

15. EFFECTS OF HUMAN ACTIVITIES TO
EARTH’S LAND AND WATER
Water Pollution
• Our water is becoming dirty. Dirty water is polluted
water. Human wastes and garbages cause water
pollution. Contamination of different chemicals such as
fertilizers, herbicides and pesticides pollutes the water
making it unsafe to humans and animals.

17. Water is polluted due to disposal of garbages into
the water. People throw their garbage into streams
and creeks.

18. EFFECTS OF HUMAN ACTIVITIES TO
EARTH’S LAND AND WATER
Air Pollution
• Human activities such as burning of fossil fuels, burning
of plastics pollutes the air. These includes smokes from
factories in big cities.

20. • The smoke coming from engines of cars, jeepneys,
trucks, and buses pollutes the air making it
harmful to breathe.

21. • Pollution from soil, water and air can harm to
people and other living things. These may cause
waterborne, soilborne and airborne diseases to
humans including animals. Pollution also affects
growths of plants.

22. Activity: Check the picture that shows proper
care for Mother Earth.

23. • Some activities that people do to meet their needs
harm the earth’s surface.
• We should show our care and concern for the
Earth by keeping the land, water and air clean and
safe.

24. Write Yes in the blank before each number if the sentence
shows care for mother Earth. Write No if it does not.
________1. Close the faucet when you are not using it.
________2. Play the water when taking a bath.
________3. Burning of garbage.
________4. Throwing of garbage into the river.
________5. Plant more trees.