Practical Skill: Investigate the Effect of Minerals on Plant Growth Photosynthesis produces carbohydrates Carbohydrates contain the chemical elements carbon, hydrogen and oxygen, which can b...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 1.2.5 Pathogens Types of Pathogen A?pathogen?is any microorganism that?causes disease?in another organism (e.g. in plants or animals) Many?microorganisms?are pathogen...
How Production is Affected by Farming Practices Farming practices can?increase?the?efficiency of energy transfer?in order to increase the total amount of energy available for?human consumpti...
Maths Skill: Calculating Percentage Yield Farmers use various strategies to increase the?yield?of their crops or livestock. These strategies include: Reducing energy losses?from crops to?oth...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 1.2.4 Prokaryotic Organisms Prokaryotes All living organisms can be grouped or ‘classified’ using a classification system that consists of?five kingdoms. These...
Maths Skills: Calculating Productivity and Efficiency within Ecosystems Given the appropriate data, it is possible to calculate the?net productivity?of?producers?or?consumers?and the?efficie...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 1.2.3 Eukaryotic Organisms: Fungi & Protoctists Fungi Main features of fungi: They are?usually multicellular?but some are?single-celled?(e.g. yeast)...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 1.2.2 Eukaryotic Organisms: Animals & Plants Animals The main features of animals: They are?multicellular Their cells contain a?nucleus?with a?distinct mem...
Primary & Secondary Productivity During photosynthesis, primary producers (such as plants and algae) convert light energy into chemical energy in biological molecules The storing of this...
