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Because carbon atoms have 4 electrons in their outer shell so always form 4 covalent bonds in a molecule, so the number of hydrogen atoms bonded can be inferred by subtracting however many bonds the carbo...

"Unseen" reading is much friendlier than it sounds; it's simply a piece of writing which you are given around 15 minutes to read, make notes on, and think about. You're then asked questions base...

Maths is very important in real life. You use it day to day from basic addition and subtraction to working out percentage discounts in shops. Some of the more complex maths like algebra is used in fields ...

The stylistic features relating to genre, tonality, harmony, texture, melody and structure show that this work by Bach is from the Baroque period. Firstly, both the Sarabande and Gigue were dances that ve...

Natural selection is one of the fundamental mechanisms of the process of evolution. There are 4 key things to remember about the process of natural selection.1) There is genetic variation within a populat...