Our Environment

Objectives

---

- To acquire knowledge about ecosystems and their components - To understand food chains and their role in ecosystems - To find out the difference between biodegradable and nonbiodegradable wastes - To study different types of pollution and their impact on environment

Summary

---

- Living (biotic) and non-living (abiotic) components interact with one another. - There are two types of ecosystems terrestrial (on land) and aquatic (in water). - The feeding relationship in an ecosystem is called a food chain. - Biodegradable and non-biodegradable waste should be kept separate -The 3R’s are in a certain order: First reduce, then reuse and finally recycle. - Waste should never be burned as it causes air and soil pollution. - Pollution occurs when the environment gets contaminated by wastes, chemicals and harmful substances. - Major types of pollution are four: air pollution, water pollution, land pollution, and noise pollution. -There are many small habits, any student can practice to reduce pollution, manage waste correctly and protect the environment.