CIE IGCSE Biology: 復(fù)習(xí)筆記：1.1.4 Diffusion Diffusion This is the process by which different gases or different liquids mix and is due to the random motion of their particles Diffusing particles m...
CIE IGCSE Biology: 復(fù)習(xí)筆記：1.1.3 Pressure & Temperature in Gases Pressure & Temperature in Gases A change in temperature or pressure affects the volume of gases As the air inside a hot ai...
CIE IGCSE Biology: 復(fù)習(xí)筆記：1.1.2 States of Matter State Changes Melting Melting is when a solid changes into a liquid Requires heat energy which transforms into?kinetic?energy, allowing the parti...
CIE IGCSE Chemistry: 復(fù)習(xí)筆記：1.1.1 Kinetic Theory Solids, Liquids & Gases Solids Solids have a?fixed?volume and shape and they have a high density The atoms?vibrate?in position but can’t chan...
CIE IGCSE Biology: 復(fù)習(xí)筆記：21.1.3 Genetic Modification Genetic Modification: Definition Genetic modification Genetic modification is?changing the genetic material of an organism by removing, chan...
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...
