Edexcel IGCSE Biology 复习笔记 5.1.3 Yeast in Food Production
Edexcel IGCSE Biology 复习笔记 5.1.3 Yeast in Food Production Yeast in Food Production Microorganisms can be used by humans to produce foods and other useful substances One example of this i...
Edexcel IGCSE Biology 复习笔记 5.1.2 Crop Plants: Increasing Yield
Edexcel IGCSE Biology 复习笔记 5.1.2 Crop Plants: Increasing Yield Crop Plants: Fertilisers Modern technology has increased food supply substantially in two key ways: Fertilisers - fertilise...
Edexcel IGCSE Biology 复习笔记 5.1.1 Crop Plants: Glasshouses & Polythene Tunnels
Edexcel IGCSE Biology 复习笔记 5.1.1 Crop Plants: Glasshouses & Polythene Tunnels Crop Plants: Glasshouses & Polythene Tunnels If a plant is given unlimited light, carbon dioxide and...
Edexcel IGCSE Biology 复习笔记 4.4.3 Deforestation
Edexcel IGCSE Biology 复习笔记 4.4.3 Deforestation Deforestation Deforestation is the clearing of trees (usually on a large scale) If trees are replaced by replanting it can be a sustainable...
Edexcel IGCSE Biology 复习笔记 4.4.2 Greenhouse Gases
Edexcel IGCSE Biology 复习笔记 4.4.2 Greenhouse Gases Greenhouse Gases A greenhouse gas is a gas that absorbs infrared radiation from the Sun so it remains trapped in the Earth’s atmosphere ...
Edexcel IGCSE Biology 复习笔记 4.4.1 The Effects of Pollution
Edexcel IGCSE Biology 复习笔记 4.4.1 The Effects of Pollution The Effects of Pollution Human population growth globally has been increasing exponentially for the last 150 years ...
Edexcel IGCSE Biology 复习笔记 4.3.2 The Nitrogen Cycle
Edexcel IGCSE Biology 复习笔记 4.3.2 The Nitrogen Cycle The Nitrogen Cycle Nitrogen as an element is required to make proteins Neither plants nor animals can absorb it from the air as N2 gas...
Edexcel IGCSE Biology 复习笔记 4.3.1 Water Cycle & Carbon Cycle
Edexcel IGCSE Biology 复习笔记 4.3.1 Water Cycle & Carbon Cycle The Water Cycle Water molecules move between various locations – such as rivers, oceans and the atmosphere – by specific p...
Edexcel IGCSE Biology 复习笔记 4.2.3 Food Pyramids & Transfer of Energy
Edexcel IGCSE Biology 复习笔记 4.2.3 Food Pyramids & Transfer of Energy Food Pyramids A pyramid of numbers shows how many organisms we are talking about at each level of a food chain. Th...
