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Complete. Reptiles
EduBook Organización
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Complete the following sentences with the missing words: were the first vertebrates to live completely on land. The bodies of snakes are covered in . Reptiles have four limbs that end in toes. Most…
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Match. Intraspecific relationships
EduBook Organización
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Match each type of interspecific relationship with its definition: Two organisms of different species compete for the same resource. On organism kills another, called prey, and eats it as food. Two…
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Think about it. Biotic factors
EduBook Organización
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Remember what you have studied in this section and answer the questions: What is the name for a relationship in which both species benefit? one species benefits and the other is unharmed? Give two…
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Complete. Molluscs
EduBook Organización
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Write correct words to replace the underlined ones: tentacles cephalopods cuttlefish shell The majority of molluscs have a hard external covering called a valve . However in gastropods , if it exists,…
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Analyse a text
EduBook Organización
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The feeding habits of starfish Starfish have a voracious appetite; in one week an adult starfish can devour over fifty clams or small oysters. When an oyster is attacked, it closes its valves, but the…
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