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Firstly, you need to understand that the two equations are interlinked, therefore the x and the y variables are the same values in both equations. To make things easier, we can number both equations. What...

This is a very broad question asked often towards the end of an Oxbridge interview to try and understand if the student is suitable for a degree which will be academically very intense. The interviewer wi...

It prevents evaporation of water from the leaf to reduce the loss of water

Any 3 from. Skin. Mucus -in nose, trachea (cilia waft the mucus into the stomach to be destroyed) . Stomach acid. lysosomes (e.g. in tears and saliva)

Endothermic reactions take in heat from the surroundings, whereas exothermic reactions release heat to the surroundings. Exothermic reactions release heat as the energy released from the bonds being made ...