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In chemistry we often talk about how 'weak' or 'strong' bonds are. The stronger the bonds are between two atoms, the more (kinetic) energy is required to break them apart. This means that more heat is needed...

Xylem and phloem are a little bit like the blood vessels we have in our body and make up what is called 'vascular bundles' in plants. Xylem are essential for providing water to the plant by transpiration fro...

Examples of verbs: Hablar, Comer, Vivir. Hablar---- hablo, hablas, habla, hablamos, habláis, hablan Comer---- como, comes, come, comemos, coméis, comen Vivir---- vivo, vives, vive, vivimos, vivís, viven (1 m...

The most important thing to do before you even start writing your essay is to plan out what you intend to say. Organise the ideas you wish to express into sections with a clear introduction and conclusion ei...

To expand the brackets you need to multiply each item inside with the number on the outside. The first bracket is expanded as follows: 5 x = 5x, 5 3 = 15, therefore 5x + 15. There is a minus sign in front of...