Lesson Notes By Weeks and Term - Senior Secondary 2

TERM – 1^ST TERM

WEEK ELEVEN

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Geography

Topic: ENVIRONMENTAL PROBLEMS

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

1. Explain environmental problem.
2. Identify types of environmental problems.
3. State the causes of each environmental problem.
4. Discuss the effects of environmental problems and their remedies.

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers,

demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

NOTE

ENVIRONMENTAL PROBLEMS

Environmental problems refer to issues that negatively impact the natural world, ecosystems, and living organisms. These can include pollution (air, water, and soil), deforestation, climate change, loss of biodiversity, and depletion of natural resources. These problems often result from human activities such as industrialization, overconsumption, and improper waste disposal, leading to long-term ecological imbalances and threats to the well-being of both the environment and human populations.

Types of environmental problems

1. Air Pollution: Emission of harmful substances into the air from industrial processes, transportation, and other human activities.

Causes of air pollution

Industrial emissions, vehicle exhaust, burning of fossil fuels, agricultural practices, and indoor activities like cooking with solid fuels.

2. Water Pollution: Contamination of water bodies by pollutants like chemicals, heavy metals, and plastics, adversely affecting aquatic ecosystems and human health.

Causes of water pollution

Industrial discharges, agricultural runoff containing pesticides and fertilizers, improper disposal of household waste, and untreated sewage.

3. Soil Degradation: Loss of fertile soil due to deforestation, overgrazing, improper agricultural practices, and urbanization.

Causes of soil degradation

Deforestation, overgrazing by livestock, improper agricultural practices like monoculture and excessive use of chemical fertilizers and pesticides, and urbanization.

4. Deforestation: Large-scale removal of forests, leading to habitat loss, disruption of ecosystems, and a decrease in biodiversity.

Causes of deforestation

Clear-cutting for agriculture, logging, urban expansion, and infrastructure development.

5. Climate Change: Long-term alteration of Earth's climate patterns due to factors such as greenhouse gas emissions, resulting in global warming, sea level rise, and extreme weather events.

Causes of climate change

 Greenhouse gas emissions from burning fossil fuels (coal, oil, and natural gas), deforestation, industrial processes, and agriculture.

6. Waste Management Issues: Improper disposal of solid and hazardous waste, contributing to pollution and environmental harm.

Causes of waste management

 Inadequate waste disposal practices, improper landfill management, and lack of recycling infrastructure.

7. Ozone Layer Depletion: Damage to the ozone layer by human-made chemicals, leading to increased exposure to harmful ultraviolet (UV) radiation.

Causes of ozone layer depletion

 Release of ozone-depleting substances such as chlorofluorocarbons (CFCs) used in refrigeration and aerosol propellants.

8. Water Pollution: Contamination of oceans through activities like oil spills, plastic waste, and industrial discharge, impacting marine life and ecosystems.

Causes of water pollution

 Oil spills, plastic pollution from improper disposal, industrial discharges, and agricultural runoff containing pollutants.

Effects of Environmental Problems

1. Air and water pollution can lead to respiratory diseases, waterborne illnesses, and other health issues in humans and animals.
2. Habitat destruction and pollution contribute to the extinction of plant and animal species, disrupting ecosystems.
3. Rising temperatures, extreme weather events, and sea level rise adversely affect ecosystems, agriculture, and vulnerable communities.
4. Depletion of natural resources like freshwater, minerals, and fossil fuels can lead to shortages and conflicts over these essential commodities.
5. Environmental problems result in significant economic burdens, including healthcare expenses, loss of biodiversity affecting agriculture, and damage to infrastructure from natural disasters.
6. Climate-related events and environmental degradation can force communities to relocate, leading to social and economic challenges.

Remedies for Environmental Problems

1. Shift towards renewable energy sources such as solar, wind, and hydropower to reduce reliance on fossil fuels and curb greenhouse gas emissions.
2. Implementing environmentally-friendly agricultural practices, including organic farming, agroforestry, and sustainable water management.
3. Promoting waste reduction, recycling programs, and responsible disposal to minimize the environmental impact of solid waste.
4. Planting trees and restoring degraded ecosystems to combat deforestation and enhance biodiversity.
5. Enforcing and strengthening regulations on industrial emissions, waste disposal, and resource extraction to mitigate environmental harm.
6. Establishing and expanding protected areas to conserve biodiversity and protect ecosystems from human encroachment.
7. Raising awareness about environmental issues and promote sustainable practices through education and outreach programs.
8. Implementing strategies to adapt to climate change and build resilience in communities vulnerable to environmental threats.

EVALUATION: 1. Define Environmental problems.

2. Identify and discuss the types of environmental problems.
3. Identify 5 effects of environmental problems.
4. Identify 5 remedies to Environmental problems.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively