Biology 9 Lesson 58: Rational use of natural resources
1. Theoretical Summary
Natural resources are the primitive material sources that are formed and exist in nature that humans can use in life.
1.1. Main types of natural resources
There are 3 types of resources:
+ Renewable resources: Able to recover when used properly.
+ Non-renewable resource: It is a type of resource that will be exhausted after a period of use.
+ Eternal energy resource: A resource that can be used forever, without polluting the environment.
- Biological resources and environment
- Natural resources
1.2. Rational use of natural resources
It is a form of use that both meets the needs of the current society for resource use and ensures the long-term maintenance of resources for future generations.
a. Rational use of land resources
– The role of land resources:
- Environment to produce food, food to feed people.
- Places to build houses, industrial parks, make roads
- Rational use of land resources makes the land not degraded
- Anti-erosion, anti-dry, anti-salinization activities
- Improve soil fertility
– Plants play an important role in soil protection: On sloping lands, where vegetation covers and terraces can contribute to soil erosion control because: on those areas water flows over the surface. The soil always hits the tree stump and the rotten layer on the ground should slow down. Therefore, forests play an important role in limiting soil erosion, especially on steep slopes.
In addition, plants have the role of improving and retaining water, increasing soil fertility.
b. Rational use of water resources
– The role of water resources:
- Water is an indispensable need of all living things on Earth.
- Factors determining the quality of human living environment.
+ Causes of water pollution and how to fix it:
- Rivers, sewers in the city, blocked flow and due to the discharge of dirty garbage into the river. Remedy by clearing the flow.
- Ponds and lakes polluted by domestic and production waste. Fix: Do not throw waste indiscriminately into ponds and lakes
- The sea is oil slick from ship accidents… Fix: Minimize accidents as much as possible. Deploy rescue operations in a timely manner. Do not dump waste into the river
Consequences of lack of water:
- The cause of illness is due to lack of hygiene.
- Impact on crops due to drought.
- Not enough drinking water for the livestock…
c. Rational use of forest resources
– The role of forest resources
- Provide many kinds of precious forest products such as wood, firewood, dyes, medicines…
- Play an important role in climate regulation
- Contributing to preventing floods, soil erosion…
- The common home of animals and microorganisms
- Precious genetic resources make a very important contribution to keeping the ecological balance of the Earth.
- Physicsable exploitation, combined with additional planting.
- Establishing a nature reserve.
2. Illustrated exercise
Lesson 1: What is the difference between renewable and non-renewable resources?
Non-renewable resources are resources that, after exploitation and use, are gradually depleted and cannot be recovered. Non-renewable resources include natural gas, coal, and oil. Renewable resources are resources that can be recovered after exploitation and rational use, which are water resources, land resources, marine resources, and biological resources.
Lesson 2: Why should we use natural resources economically and rationally?
Resources are not endless, not meeting all the needs of human use. If we do not use them properly, we cannot maintain them for a long time for future generations. Therefore, in order to meet the needs of using resources of the present society and maintain long-term resources for future generations, it is necessary to use natural resources sparingly and rationally.
3.1. Essay exercises
Question 1: What kind of energy source is called a clean energy source?
Verse 2: How does rational use of forest resources affect other resources such as land and water resources?
Question 3: What is the rational use of natural resources?
Question 4: Natural resources are not endless. How do we exploit and use natural resources for sustainable development?
3.2. Multiple choice exercises
Question 1: Unreasonable exploitation, transportation and use of minerals will
A. loss of land, loss of forests.
B. causes environmental pollution of soil, water and air.
C. causing ecological imbalance.
D. both A, B and C.
Verse 2: Which of the following resources are of plant origin?
A. Copper, lead, iron, zinc.
B. Petroleum, coal, natural gas.
C. Sand, gravel, stone.
D. Eternal energy.
Question 3: Which of the following protected resources will play a very important role in the protection of soil, water and other biological resources?
D. Not A and B.
Question 4: Fill in the blanks with suitable words and phrases (…) in the following sentences.
A non-renewable resource is a resource that, after a period of use, will be …………(1) ………. (coal, oil, gas. natural combustion…).
Renewable resource is a resource that, when used ………………(2) …………, will have conditions for regeneration (land, water) , creature).
Question 5: Fill in the blanks with suitable words and phrases (…) in the following sentences.
Protection of existing forests, combined with tree planting and afforestation, is a very important measure to ………… ……(2)……. the environment is being degraded.
Applying biotechnology to conserve rare genetic resources and crossbreeding organisms with high yield and good quality is a necessary and effective job to ………( 3)…………Nature.
After completing this lesson, you should know the following requirements
- Help students distinguish 3 types of natural resources, state the importance and effects of rational use of natural resources and the concept of sustainable development.
- Train students skills to work in groups, synthesize knowledge and apply it in practice.
- Educating students about environmental protection and preserving natural resources.