SCIENCE

ACTIVIDADES DE REPASO PARA EL CONTROL DEL DÍA 2 DE DICIEMBRE "ECOSYSTEMS"

🌟 Science Control Review 🌟

December 2nd

UNIT: ECOSYSTEMS

(4th Grade Primary)

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🌍 What's an Ecosystem?

An ecosystem is a community of living organisms (plants, animals, and microbes) in conjunction with the non-living components of their environment (air, water, and mineral soil), interacting as a system. Everything in an ecosystem is connected!

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🔍 Factors of an Ecosystem

Ecosystems are made up of two main types of factors:

1. Biotic Factors: These are all the living things in an ecosystem.
• Examples: Plants, animals, fungi, bacteria.
2. Abiotic Factors: These are all the non-living physical and chemical parts of an ecosystem.
• Examples: Sunlight, water, temperature, soil, air, rocks.

                                                         

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🌳🌊 Types of Ecosystems

Ecosystems can be classified in different ways:

By Origin:

• Natural Ecosystems: Formed and maintained by nature without human intervention.

  

• Artificial Ecosystems: Created or heavily modified by humans.

                             

By Environment:

• Terrestrial Ecosystems: Found on land.
• Aquatic Ecosystems: Found in water (Marine or Freshwater).

                    

 

👨‍👩‍👧‍👦 Specie, Community, and Population

• Specie (Species): A group of living organisms consisting of similar individuals.
• Population: All the individuals of a single species that live in the same area.
• Community: All the different populations of different species that live and interact in the same area.

          


                                                           

 Relationships Between Living Things

• Commensalism: One organism benefits, and the other is neither helped nor harmed.
• Parasitism: One organism benefits by harming the host.
• Mutualism: Both organisms benefit from the relationship.

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🍔 Food Chain

A food chain shows how energy and nutrients are passed from one living thing to another.

1. Producers: Plants/Algae (make their own food).
2. Consumers: Animals (eat other organisms).
3. Decomposers: Fungi/Bacteria (break down dead matter).

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🎁 What Do We Get From Living Things?

Living things provide us with many essential things: Food, Materials (wood, cotton), Medicines, and Oxygen.

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♻️ Overconsumption

Overconsumption means using too many natural resources, more than the Earth can replenish, leading to pollution and climate change.

    

 

Ecosystem, an interactive worksheet by Italia Loza
liveworksheets.com

Food Chain Worksheet 2, an interactive worksheet by Arzin Wadima
liveworksheets.com

Ecosystems, an interactive worksheet by Teacher_Alba
liveworksheets.com

Biotic and Abiotic Factors, an interactive worksheet by dguevara24
liveworksheets.com

Population, community, an interactive worksheet by zufi1
liveworksheets.com