CIE IGCSE Biology: 复习笔记：21.1.3 Genetic Modification
CIE IGCSE Biology: 复习笔记：21.1.3 Genetic Modification Genetic Modification: Definition Genetic modification Genetic modification is changing the genetic material of an organism by removing, chan...
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CIE IGCSE Biology: 复习笔记：21.1.2 Biotechnology
CIE IGCSE Biology: 复习笔记：21.1.2 Biotechnology Everyday Products Made with Biotechnology Biofuels Yeast is a single celled fungus that uses sugar as its food source When it respires, ethanol and...
CIE IGCSE Biology: 复习笔记：21.1.1 Usefulness of Bacteria
CIE IGCSE Biology: 复习笔记：21.1.1 Usefulness of Bacteria Use of Bacteria Microorganisms can be used by humans to produce foods and other useful substances The most common type of mi...
CIE IGCSE Biology: 复习笔记：20.1.7 Reasons for Conservation: Extended
CIE IGCSE Biology: 复习笔记：20.1.7 Reasons for Conservation: Extended Reasons for Conservation: Extended There are numerous reasons why conservation programmes are important Maintaining or increas...
CIE IGCSE Biology: 复习笔记：20.1.6 Endangered Species
CIE IGCSE Biology: 复习笔记：20.1.6 Endangered Species Conservation for Endangered Species Endangered Species An endangered species is at risk of becoming extinct There are several reasons w...
CIE IGCSE Biology: 复习笔记：20.1.5 Sustainability
CIE IGCSE Biology: 复习笔记：20.1.5 Sustainability Sustainable Use of Resources We use many resources from the Earth; some, such as food, water and wood, are sustainable resources A sustaina...
CIE IGCSE Biology: 复习笔记：20.1.4 Other Pollution
CIE IGCSE Biology: 复习笔记：20.1.4 Other Pollution Plastic Pollution Plastics have a large negative impact on both land and water habitats due to their non-biodegradability In marine habita...
CIE IGCSE Biology: 复习笔记：20.1.3 Water Pollution
CIE IGCSE Biology: 复习笔记：20.1.3 Water Pollution Untreated Sewage & Excess Fertiliser Human activities have led to the pollution of land, water and air Pollution comes from a v...
CIE IGCSE Biology: 复习笔记：20.1.2 The Importance of Biodiversity
CIE IGCSE Biology: 复习笔记：20.1.2 The Importance of Biodiversity Human Pressures on Other Species Biodiversity Is defined as the number of different species that live in a particular area Human a...
