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Sexual reproduction and fertilisation
EduBook Organización
- 4211 visitas
Sexual reproduction in animals Most animals reproduce sexually: a new individual is created by the fertilisation of a female ovum by a male sperm. In nearly all species of animals, individuals are…
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Sexual reproduction in animals
EduBook Organización
- 4050 visitas
2.1. How do animals reproduce sexually? In sexual reproduction in animals, a new organism is created by the union or fertilisation of two gametes from individuals of different sexes. This type of…
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Complete. The equatorial landscape
EduBook Organización
- 3725 visitas
Complete the following sentences about the equatorial landscape: The equatorial landscape is found in areas of the planet located around the . The equatorial climate is characterised by very…
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Reproduction in living things
EduBook Organización
- 3517 visitas
1.1. Types of reproduction Reproduction in living things ensures that the species will continue. There are two basic types of reproduction: Sexual reproduction takes place when sex cells, known as…
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Think. The effects of climate change
EduBook Organización
- 3373 visitas
Think about the impact of climate change and show how it could affect these places or living beings in the future: A coastal population. An area that suffers from periodic drought. Animal or plant…
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Humans change ecosystems
EduBook Organización
- 3354 visitas
Human activities affect ecosystems around the world directly and indirectly. These activities are dangerous to many living things. We can say that human activity endangers many species of animals and…
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Choose. Intraspecific relationships
EduBook Organización
- 3257 visitas
Choose the correct word to complete the sentence or answer the question: Corals form relationships called... This involves a parent and the young... There is an established hierarchy and division of…
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Choose. The rainforest
EduBook Organización
- 3149 visitas
Which is the best answer for each question: What type of vegetation is found in the equatorial landscape? What types of plants make up the vegetation of the equatorial landscape? Which species of animal…
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Analyse. A graph
EduBook Organización
- 3107 visitas
Look at the graph showing how a species of fish survives at different temperatures and answer the following questions: What does the graph show? What are the upper and lower temperature limits for these…
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True/false. Asexual reproduction
EduBook Organización
- 3073 visitas
Decide if the following statements are true or false: Asexual reproduction needs two individuals of the same species. ➝ Budding and splitting are two types of asexual reproduction. ➝ Sponges…
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