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Classes de plomes
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Les plomes estan fetes de ceratina, la mateixa substància que constitueix els pèls dels mamífers i les escates dels rèptils. Les plomes dels ocells són molt lleugeres. Estan formades per un eix…
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Autoavaluació T13 03 - La reproducció dels animals
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Com es diuen els animals en els quals el zigot es converteix en embrió a l'interior d'un ou?
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Ordena. Fabricació del paper
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Ordena el procés de fabricació del paper:
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Subtropical vegetation
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This picture shows a typical subtropical landscape in the Canary Islands. The vegetation is very diverse due to the influence of the sea and the variation in altitude. The vegetation in the Canary…
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True/false. The metalworking societies
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Decide if the following statements are true or false: The first period of Prehistory is called the Metal Age. ➝ The first metal used in Prehistory was iron. ➝ The process of working with metal is…
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Choose. Archaeological materials
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Imagine that you are one of a group of archaeologists who have excavated a Neolithic village. Remembering that after so many years only inorganic materials will remain, mark which items in the following…
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Identify. Parts of a villa
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Write the names of the places and objects found in a Roman villa: Where iron products were made: . Where bread was made: . Where the grain was stored: . Where the horses were kept: . Machine for making…
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Initial evaluation 02 - Living things
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Decide if each statement is true (T) or false (F): Micro-organisms are living things. ➝ Living things are active. ➝ Micro-organisms can be seen by the naked eye. ➝ The human body is made up of cells. ➝
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Answer. Arthropods
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Remember what you have studied in this section and answer the questions: What is a characteristic feature of arthropods? How many groups of animals are classified as arthropods? Which is the most…
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Respiration in plants
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How plants respire Like all living things, plants need energy to live. To obtain this energy, they absorb oxygen from the air and release carbon dioxide. This process is called respiration. Respiration…
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