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Summaries - The Diversity of Life
EduBook Organización
- 2276 visitas
1. Evolution and biodiversity Biological evolution is due to a series of spontaneous genetic changes, or mutations, which offer advantages to the organism and allow it to survive and multiply more…
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Compare the photos
EduBook Organización
- 1930 visitas
Look carefully at these two photos and answer the questions: In which of the two species has internal fertilisation taken place? Which of the two species is viviparous? ¿Cuál de las dos especies…
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True/false. Evolution and biodiversity
EduBook Organización
- 1828 visitas
Are the following sentences true or false? The term biodiversity includes all the minerals in the Earth's crust. Biological evolution is the gradual transformation of living things in order to adapt…
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Think about it. Biotic factors
EduBook Organización
- 1808 visitas
Remember what you have studied in this section and answer the questions: What is the name for a relationship in which both species benefit? one species benefits and the other is unharmed? Give two…
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Biotic factors
EduBook Organización
- 1708 visitas
3.1. Biotic factors Biotic factors are the relationships between living things. They vary according to the organisms involved and are classified as: Intraspecific relationships, where individuals of the…
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End-of-unit evaluation - Animal reproduction
EduBook Organización
- 1631 visitas
Reproduction is the only vital function that is not needed to keep an individual alive. It ensures the continuation of the species. Although sexual reproduction is a universal characteristic of animals,…
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End-of-unit activities - Animal reproduction
EduBook Organización
- 1616 visitas
Reproduction is the only vital function that is not needed to keep an individual alive. It ensures the continuation of the species. Although sexual reproduction is a universal characteristic of animals,…
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The classification of living things - Living things
EduBook Organización
- 1466 visitas
There are millions of different living things on our planet. We classify them into groups according to common characteristics. This helps us to understand more about each group. The smallest group is…
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Nematodes, annelids and molluscs
EduBook Organización
- 1199 visitas
2.1. Nematodes Nematodes are thin, round, non-segmented worms. There are a large variety of free-living land nematode species, although they prefer wet environments. Nematodes also include parasitic…
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Protecting the tree of life
EducaMadrid Organización
- 3204 visitas
Europe is a continent of breathtaking natural beauty and dramatic contrasts. The EU's 27 Member Satates stretch form the frozen Arctic Circle in the north to the warm Mediterranean waters in the south.…
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