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Human reproduction and sexual differences
EduBook Organización
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Human reproduction Humans start life as a single microscopic cell in the wombs of their mothers. This cell is called a zygote. The zygote is formed by the union of two cells: the ovum (or egg cell) from…
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Introduction - The skeletal-muscular system
EduBook Organización
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Our skeleton is made up of bones. These are living organs in our body that grow at the same rate as we grow. If they break, they can mend themselves. Some bones protect important organs in our body,…
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Summaries - The Hydrosphere
EduBook Organización
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1. Water on our planet The hydrosphere is all of the water that exists on our planet. Water is the most abundant substance on our planet and the main component of living things. Water is the only…
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Comprehension (II) (PET)
EduBook Organización
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Now rewrite the incorrect ones. Gulliver is happy to be in England. Gulliver and the sailors see houses when they reach land. The sailors leave Gulliver alone. Gulliver is not afraid of the big creature…
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Introduction - Matter and materials
EduBook Organización
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Everything around us is made up of matter. Matter can be found in three states: solid, liquid and gas. The air we breathe is a gas, the water in rivers and seas is a liquid, and the rocks are in a solid…
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Overfishing
Laia Docente
2 lo usan

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Over three quarters of our planet are covered by the oceans. Their biodiversity is unmatched and they contain over 80 percent of all life on earth, mostly unexplored. Millions of people worldwide are…
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Let's learn how to... - Natural and man-made landscapes
EduBook Organización
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Analyse a landscape What do we do? In this activity, we will look at and analyse a landscape. Follow the steps described below. Find a photo of a landscape. Look in magazines or on the Internet. Answer…
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The natural environment
EduBook Organización
3227 visitas
Adapted. Animals and plants are different depending on their habitat. They are adapted to it. Food chain. The food chain shows what the living things in an ecosystem eat. Biological community. A…
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True / False. The cerebrum
EduBook Organización
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Are these sentences true or false? The cerebrum is the most important nervous centre in our body. It contains nearly one million neurons. The outer surface, which is 1.5 to 4 millimetres thick, is…
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Hearing
EduBook Organización
3204 visitas
The parts of the ear Our sense of hearing is in our ears. We use our ears to hear different sounds. We can hear loud or quiet sounds. We can also hear if a sound is near or far. Our ears are divided…
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