AMC官方考试数据公开：年龄越来越小，难度越来越大！
作为数学学术活动届的巨头元老，美国数学学术活动AMC的赛事影响力想必已经不用再多描述了，作为美式数学学术活动，AMC在英国也很受认可，牛津、剑桥都对有出色AMC成绩的学生青睐有加，更不用说美国本土的MIT、CMU...
AQA A Level Biology复习笔记5.1.2 The Light Dependent Reaction
The Light Dependent Reaction Thylakoids Plant cells contain chloroplasts which is the site of photosynthesis Chloroplasts are filled with a fluid known as the stroma The system of membranes ...
AQA A Level Biology复习笔记4.6.9 Genetic Relationships Between Organisms
Interpret Data To Suggest Relationships Between Organisms & Appreciate the Role of Genetic Technologies The gene pool The phenotype of all organisms is dependent on its genotype and envi...
AQA A Level Biology复习笔记4.6.8 Mean & Standard Deviation
Maths Skill: Calculating Mean Values & Standard Deviation Descriptive statistics are invaluable when interpreting data from experiments Some experiments have thousands or millions of dat...
AQA A Level Biology复习笔记4.6.7 Quantitative Investigations of Variation
Quantitative Investigations of Variation Quantitative investigations of variation can involve the interpretation of mean values and their standard deviations A mean value describes the avera...
AQA A Level Biology复习笔记4.6.6 Random Sampling
Apparatus & Techniques: Random Sampling Measuring the different levels of biodiversity within an ecosystem can be a tasking job Finding out which species live in an ecosystem and the siz...
AQA A Level Biology复习笔记4.6.5 Investigating Diversity
Measuring Genetic Diversity A species can be defined as a group of organisms that are able to interbreed and produce fertile offspring Members of one species are reproductively isolated from...
AQA A Level Biology复习笔记4.6.4 Conservation & Farming
The Balance Between Conservation & Farming After the second world war there was a massive change in how food was produced There was a need to produce more food, at a quicker rate In othe...
Edexcel IGCSE Maths 复习笔记 4.11.1 Area - Formulae
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AQA A Level Biology复习笔记4.6.3 Index of Diversity
The Index of Diversity Once the abundance of different species in an area has been recorded the results can be used to calculate the species diversity or biodiversity for that area Species d...
Edexcel IGCSE Maths 复习笔记 4.10.2 Sine & Cosine Rules, Area of Triangle - Harder
Edexcel IGCSE Maths 复习笔记 4.10.2 Sine & Cosine Rules, Area of Triangle - Harder Choosing which rule or formula to use It is important to be able to decide which Rule or Formula to use to ans...
AQA A Level Biology复习笔记4.6.2 Species Richness
Species Richness Species richness is the number of species within a community A community is a group of populations of different species living in the same place at the same time that intera...
