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- Vida en la prehistoria
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Feeding and digestion in animals
EduBook Organización
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1.1. How do animals feed? Animals are heterotrophic; they need to find food and transform it to get nutrients. These substances provide energy and materials the animal needs to grow, make new tissues…
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Summaries - Animal nutrition
EduBook Organización
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1. Feeding and digestion in animals Animals are heterotrophic; they need to find food and transform it to get nutrients. These substances provide energy and materials the animal needs to grow, make new…
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Raising cows and producing milk - Work
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Cows Cows are vertebrates. Their body is covered in fur and they have a large udder, which produces milk. Cows' legs end in two toes. These are covered by a thick nail, called a hoof. How do we…
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Analyse. A text
EduBook Organización
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Polyembryony Polyembryony is a type of sexual reproduction in which an embryo fragments into several identical embryos. They each develop independently. The young of each litter are of the same sex, as…
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Structure of a tapeworm
EduBook Organización
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Adult tapeworms are intestinal parasites of vertebrates. They have a very simple structure. Tapeworms do not have a respiratory, circulatory or digestive system. Their body is ribbon-shaped, with a head…
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