Edexcel IGCSE Biology: Double Science 復(fù)習(xí)筆記 4.2.1 Trophic Levels & Food Chains Trophic Levels & Food Chains Trophic levels Trophic levels are used to describe the?feeding relation...
Intro to Polar Coordinates What are polar coordinates? Polar coordinates?are an alternative way (to Cartesian coordinates) to describe the position of a point in 2D (or 3D) space In 2D, the positio...
Edexcel IGCSE Biology: Double Science 復(fù)習(xí)筆記 Abiotic & Biotic Factors In Biology, ‘a(chǎn)biotic’ means non-living An?abiotic?factor is a?non-living?factor within an environment such as temperature...
Edexcel IGCSE Biology: Double Science 復(fù)習(xí)筆記 4.1.2 Practical: Investigating Population Size Practical: Investigating Population Size Ecology?is the branch of biology that studies: T...
Edexcel IGCSE Biology: Double Science 復(fù)習(xí)筆記 4.1.1 Key Terms in Ecology Key Terms in Ecology There are several key terms that we use when referring to the various different components of a...
Edexcel IGCSE Biology: Double Science 復(fù)習(xí)筆記 3.2.7 Natural Selection Darwin's Theory of Evolution by Natural Selection Charles Darwin proposed the?theory of evolution by natural sel...
Edexcel IGCSE Biology: Double Science 復(fù)習(xí)筆記 3.2.6 Mutation Mutations Mutations are?rare,?random changes?that occur in the?sequence of DNA bases?in a gene or a chromosome Mutations occur?c...
Edexcel IGCSE Biology: Double Science 復(fù)習(xí)筆記 Types of Variation Types of Variation Variation is defined as?differences between individuals of the same species Variation can be divided into...
不少同學(xué)參加AP考試，需要AP成績，一是為了能在申請中利用AP成績?yōu)樽约涸黾觾?yōu)勢，二是AP分?jǐn)?shù)在大學(xué)中可以兌換學(xué)分，因此AP分?jǐn)?shù)至關(guān)重要。2023年AP考試全球報名開啟，那么不同年級學(xué)生如何選報AP科目呢？ AP課程為...
