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The food chain

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Fill in the blanks with the correct words. This activity will give science students the necessary vocabulary to learn about ecology/ environment and the relationship between living organisms. Reference: Text taken from HAS 3 Reading & Writing. For more activities, please visit ziyaadspage.weebly.com

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The food chain

Fill in the blanks with the correct words. This activity will give science students the necessary vocabulary to learn about ecology/ environment and the relationship between living organisms. Reference: Text taken from HAS 3 Reading & Writing. For more activities, please visit ziyaadspage.weebly.com

Ziyaad Rajabalee
1

decomposers fungi organism producer herbivores Consumers secondary omnivores chain carnivores

A food chain shows the relationship between organisms which feed on each other . This essay will describe the three types of organisms which form food chains , and explain how each organism acts as a food source for the next one in the chain . The first organism in the food cannot feed on other organisms and is called a producer because it makes its own food . Green plants are an example of a . They use photosynthesis , that is , the process of turning carbon dioxide and water into organic compounds using energy from sunlight . These organic compounds are found in various parts of the plant such as the leaves , fruit , and roots , and are a source of energy for the organism in the next step in the chain , a consumer .

Consumers are generally animals and humans who eat the products of photosynthesis . Examples of this are sheep eating grass , and birds eating seeds . are classified depending on their place in the chain . For instance , when humans eat vegetables , they are primary consumers . In other words , they are directly eating a product of photosynthesis . When they eat meat , they are consumers .

Consumers can also be divided into groups according to what they eat :
, which eat only plants or plant products ,
, which eat animals , and
, which eat both plants and animals .

The transfer of energy from one species to another can occur several times , but eventually the chain ends . When the final consumer dies , its body is broken down into simple molecules by such as bacteria and , in the final steps in the chain . These molecules are returned to the soil , where they are used by plants , and the food chain begins again . To summarize , a food chain shows that every organism is dependent on another for its source of energy , and in turn acts as a food source for the next in the chain .