CIE IGCSE Biology: 復(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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...
CIE IGCSE Biology: 復(fù)習(xí)筆記：20.1.1 Ensuring Food Supply Intensive Food Production Making food production more?intensive?means producing food more?efficiently?with a finite amount of land an...
