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This is part of the chemistry of life chapter.

Its important to Biology because :

Water is the medium of life and biology is the study of life.

Water molecules are polar. this means t...

There are several facts that could prove that mitochondria and plastids - eukaryotic organella descend from prokaryotic organisms. One of the arguments is that the metioned organella posses their own DNA ...

Ionic bonds are an electrostatic attraction between oppositly charged ions. Ionic bonds are formed between a non-metal (positively charged cation) (group I,II, III on periodic table) and a metal (negative...

Tone should be one of the first pieces you look for when you get a passage of poetry or prose. Tone isnt always the best descriptor- mood is another way of looking at it. Read the passage 2-3 times and ea...

It is crucial to know and recognise the text type conventions - they are the basis in Paper 2. There is much guidance in the syllabus and online, however, when explained in person with examples it becomes...