Natural Sciences - Term 4 - Week 3

An ecosystem is a community of living organisms, such as plants, animals, and microorganisms, interacting with their physical environment, including air, water, and soil. Ecosystems can be large, like forests and oceans, or small, like a pond or a garden. Each ecosystem has its own unique characteristics and supports different types of life.

Let's look at a few examples of ecosystems. A forest ecosystem is filled with trees, birds, insects, and other wildlife. In contrast, a desert ecosystem has cacti, lizards, and very little rainfall. By comparing these ecosystems, we can see how different conditions affect the types of plants and animals that can thrive in each environment.

In groups, discuss the ecosystems you are familiar with. Think about where they are located and what types of plants and animals live there. After your discussion, each group will share one interesting fact about their chosen ecosystem with the class. This will help us build our vocabulary and understanding of ecosystems.

For this project, you will create a poster of your own ecosystem. Choose an ecosystem type (forest, desert, ocean, etc.) and include drawings or pictures of the plants and animals that live there. Label each component and write a few sentences explaining how these organisms interact with each other and their environment. Be prepared to present your poster to the class.

• A type of animal
• A community of living organisms and their environment
• A kind of weather pattern
• A type of plant

Answer: A community of living organisms and their environment

An ecosystem includes all living things in a specific area and their interactions with the environment.

• Amazon Rainforest
• Sahara Desert
• Great Barrier Reef
• Rocky Mountains

Answer: Sahara Desert

The Sahara Desert is known for its dry conditions and unique plant and animal life adapted to survive there.

Answer: Plants

Plants are a vital part of ecosystems, providing food and oxygen for other organisms.

• Abiotic factors
• Biotic factors
• Environmental factors
• Geological factors

Answer: Biotic factors

Biotic factors refer to all the living components of an ecosystem, such as plants and animals.

Answer: Animals eat plants.

Many animals rely on plants for food, which is a key interaction in ecosystems.

• Desert
• Tundra
• Rainforest
• Savanna

Answer: Rainforest

Rainforests have a warm climate and receive a lot of rainfall, supporting a wide variety of plants and animals.

Answer: Pollution.

Pollution can harm plants and animals, disrupting the balance of ecosystems.