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A surd is an irrational square root which cannot be reduced to a whole number when squared. When you think of the square root of 4, the answer is 2. When you think of the square root of 9, the answer is 3...

Eutrophication occurs when nitrate fertilisers are carried by ground water into lakes and ponds. The fertliser encourages algal growth in the water, which in turn blocks out sunlight. This causes submerge...

(a) Coal contains  Carbon (80%) Sulfur (9%) Oxygen (5%) Hydrogen (1%) other elements (5%) (b) Carbondioxide (CO2) Sulfurdioxide (SO2) Water  (H2O) (c)  Carbon dioxide: Global warming (green house effect) ...

Desertification is the expansion of dry desert conditions into areas that previously had not experienced them. This is characterized by lower soil productivity and a depletion of natural resources. There ...

The key question you need to have in your mind when writing your personal statement is: “Why me?”Admissions officers want to know if you are the type of person who could contribute to their Universities i...