My Science, Health and Physical Education Guide
Part 1 - Science
Lesson 7 - Environment Conservation
1 Put a tick (√) if the statements is correct and a cross (×) if
it is wrong.
Answer 👉
a. √ Trees are to be planted to decrease the pollution caused by smoke and dust.
b. √ Rivers are to be let flow freely without making embankments.
c. √ Forest fire destroys wildlife and plants.
d. × Farming is to be done in sloppy land as it is. (Farming should be done in a way that minimizes soil erosion and other environmental impacts.)
e. √ Unplanned urbanization increases environmental pollution.
2. Answer the following questions in brief.
a. What can be done to protect air from being polluted? Write any two measures.
Answer 👉 Two measures to protect air from being polluted are:
- Reducing vehicular emissions by promoting public transport and using electric vehicles,
- Controlling industrial emissions by using cleaner production techniques and enforcing strict regulations.
b. How does afforestation help in environment conservation?
Answer 👉 Afforestation helps in environment conservation in multiple ways:
- Trees absorb carbon dioxide from the atmosphere and release oxygen, thus reducing the greenhouse effect and improving air quality,
- Trees prevent soil erosion and improve soil quality, and
- Forests provide habitat for wildlife and promote biodiversity.
c. How does the terracce farming in slope areas help in land conservation?
Answer 👉 Terrace farming in slope areas helps in land conservation by preventing soil erosion and improving soil quality. The terraces act as barriers that slow down the flow of water and prevent it from washing away the topsoil. The terraces also help to retain water, thereby increasing the water-holding capacity of the soil.
d. What things can prevent flood, landslide and soil erosion? Write any two measures.
Answer 👉 Two measures to prevent flood, landslide, and soil erosion are:
- Building retaining walls and embankments to control the flow of water and prevent flooding, and
- Planting vegetation and trees on hillsides to prevent soil erosion and landslides.
e. What is unplanned urbanization? How can it be made planned?
Answer 👉 Unplanned urbanization refers to the haphazard growth of cities and towns without proper planning and regulation. It leads to several environmental problems, such as air and water pollution, deforestation, loss of green spaces, and increased traffic congestion. To make urbanization planned, there should be a comprehensive plan that takes into account factors like population growth, land use, infrastructure development, and environmental conservation. The plan should be implemented through strict regulations and policies, such as zoning laws, building codes, and environmental impact assessments.
Other Solution
