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Complete. Reproduction
EduBook Organización
- 5173 visitas
Complete the text on human reproduction: sperm men ovum sexual characteristics Sexual fertilisation zygote reproductive system females reproduction is the type of reproduction in which an from the…
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Complete. Rock formation
EduBook Organización
- 4748 visitas
Complete the sentences with the missing words: Rocks change over time and are into other rocks. The process of transformation of some rocks into other rocks takes of years. rocks are transormed into…
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Introduction - The Animal Kingdom (I). Invertebrates
EduBook Organización
- 1 lo usan
- 4395 visitas
Today our planet is home to a great variety of organisms. This is the result of an evolutionary process that began some 3.5 billion years ago. Invertebrates are a very diverse group of animals that do…
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The world today
EduBook Organización
- 4595 visitas
The collapse of the USSR caused the East-West blocs to disappear, leaving the United States of America as the sole world superpower. As a result, capitalism has become the principal economic model, and…
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CEDA's agenda
EduBook Organización
- 4402 visitas
Candidates from the anti-Marxist coalition CEDA steadfastly defended the need for an immediate dissolution, using the appropriate process in each case, of constitutional and legal precepts inspired by…
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Final self-evaluation 10.07 - The Animal Kingdom (I). Invertebrates
EduBook Organización
- 4281 visitas
Are the following sentences true or false? Arthropods are invertebrates. Arthropods have bodies divided into antennae, head and abdomen. Arachnids are arthropods with six legs. Centipedes are myriapods.…
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True/false. Spain in the EU
EduBook Organización
- 4273 visitas
Are the following sentences true or false? The Spanish economy had to adapt in order to be accepted into the EEC. The first elections for the European Parliament happened in Spain in 1982. Spain has 54…
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Think about it. Photosynthesis and respiration
EduBook Organización
- 4140 visitas
Remember what you have studied in this section and answer the questions: Some people say you should not keep plants in your bedroom. Is there a scientific basis for this belief? Can you explain why or…
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End-of-unit activities - The Animal Kingdom (I). Invertebrates
EduBook Organización
- 4134 visitas
Today our planet is home to a great variety of organisms. This is the result of an evolutionary process that began some 3.5 billion years ago. Invertebrates are a very diverse group of animals that do…
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Final self-evaluation 7 - The Hydrosphere
EduBook Organización
- 4122 visitas
Are the following sentences true or false? Desalination is a cheap and easy way of making fresh water from sea water. Desalination is a process for transforming salt water into fresh water. All the…