Topic
Sutrusulal - Environment
🌍 Environment (Sutrusulal / Environment) – Full description
Environment is what surrounds man and other living things A system that includes all natural and man-made elements.
📘 Elements of environment
- ✔ Biological components (Biotic):Plants, animals, humans
- ✔ Abiotic components:Air, water, soil, light
🌿 Ecosystem
An ecosystem is an interrelated system of biological and inorganic components.
- ✔ Forest ecosystem
- ✔ Aquatic ecosystem
- ✔ Desert ecosystem
⚡ Environmental pollution (Pollution)
1. Air Pollution
- ✔ Vehicle smoke, industrial smoke
2. Water Pollution
- ✔ Sewage, industrial waste
3. Soil Pollution
- ✔ Chemicals, plastics
4. Noise Pollution
- ✔ High volume
🌱 Environmental protection
- ✔ Afforestation
- ✔ Waste recycling
- ✔ Reduce plastic
- ✔ Water conservation
🌏 Importance of environment
- ✔ Source of life
- ✔ Provides resources
- ✔ Controls climate
Key Notes (TNPSC):
- ✔ Biotic & Abiotic components
- ✔ Ecosystem is important
- ✔ Pollution types – Air, Water, Soil, Noise
- ✔ Conservation is essential
TNPSC Exams include “What is Ecosystem?”, “Types of Pollution?”, “Biotic vs Abiotic?” Questions like Frequently asked questions from this topic.
Therefore, environment is a very important topic in general science and biology subjects.
🌳 Biodiversity (Palluyiriyal / Biodiversity) – Full description
Biodiversity is all kinds of living things on Earth (of plants, animals, microbes) refers to diversity.
📘 Types of Biodiversity
- ✔ Species Diversity:Various species
- ✔ Genetic Diversity:Difference within the same species
- ✔ Ecosystem Diversity:Various environments
🌍 Importance of Biodiversity
- ✔ Provides food and medicines
- ✔ Maintains ecological balance
- ✔ Conserves biological resources
⚠️ Biodiversity threats
- ✔ Deforestation
- ✔ Pollution
- ✔ Climate change
- ✔ Overexploitation
🌱 Safety methods
- ✔ In-situ conservation:Conservation in the natural environment
- ✔ Ex-situ conservation:Park, Zoo
🌿 Examples
- ✔ India – biodiversity hotspot
- ✔ Tropical forests
Key Notes (TNPSC):
- ✔ Biodiversity = Plurality of living things
- ✔ Types: Genetic, Species, Ecosystem
- ✔ Threats: Deforestation, Pollution
- ✔ Conservation methods are important
“What is Biodiversity?”, “What are Types?”, “What is In-situ?” in TNPSC Exams. Questions like Frequently asked questions from this topic.
Therefore, biodiversity is a very important topic in environmental science.
🌡️ Weather Change (Vaanilai Matram / Climate Change) – Full Explanation
Climate Change is the long-term climate of the Earth. Indicates changes. It is due to rise in temperature, change in rainfall patterns and causing effects such as sea level rise.
📘 Causes of climate change
- ✔ Greenhouse Gases:CO₂, Methane
- ✔ Deforestation
- ✔ Factory discharges
- ✔ Fuel combustion (Fossil fuels)
🌍 Greenhouse Effect
Greenhouse winds keep the Earth's heat from escaping. They increase the temperature.
⚠️ Consequences
- ✔ Global warming
- ✔ Melting glaciers
- ✔ Sea level rise
- ✔ Drought and Flood
🌱 Prevention methods
- ✔ Afforestation
- ✔ Renewable energy
- ✔ Pollution reduction
- ✔ Reduction in fuel consumption
🌏 Importance
- ✔ Helps maintain ecological balance
- ✔ Protects human life
Key Notes (TNPSC):
- ✔ Climate change = long term change
- ✔ Greenhouse gases are the main cause
- ✔ Global warming effect
- ✔ Afforestation solution
“What is Greenhouse effect?”, “What is the cause of Global warming?”, “What is Climate change?” in TNPSC exams. Questions like Frequently asked questions from this topic.
Therefore, climate change is a very important topic in environmental science.
People Also Ask
Quick answers for common questions
The environment is all the natural and man-made elements that surround living things.
A system in which organisms (biotic) and their environment (abiotic) work together.
Living things (human, animal, plant).
Non-living elements (air, water, soil, light).
Increase in harmful substances in the air.
Water quality is poor and unusable.
Accumulation of toxic substances in the soil.
Diversity of different species.
Increase in Earth's average temperature.
The effect of trapping heat in the earth and increasing the temperature.
