تعلم الانجليزية / موضوع تعبير عن بيئة وحياة الحيوانات

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مواضيع ونشاءات مختلفة

The animal mode of nutrition is called heterotrophic because they get their food from other living organisms. Some animals eat only plants; they are called herbivores. Other animals eat only meat and are called carnivores. Animals that eat both plants and meat are called omnivores.

The environments animals live in varies greatly. By the process of evolution, animals getadapted to the habitats they live in. Obviously, a fish is adapted to its life in water, and aspider is adapted to a life catching and eating insects. A mammal living on thesavannahs of East Africa lives quite a different life from a mammal like a porpoisecatching fish in the sea.

The fossil record of animals goes back about 600 million years to the Ediacaran period. During the whole of this long period of time animals have been constantly changing, so that the animals alive on Earth today are very different from those on the edges of the sea-floor in the Ediacaran. The study of ancient life is called palaeontology.