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A diagram would be very useful for this answer. At the poles, the Sun's angle in the sky decreases, so the same amount of solar radiation is spread over a greater surface area. At tropical latitudes howev...

The verbs 'ser' and 'estar' both translate to the English 'to be'. But don't worry! There are some key differences that help us know which Spanish verb we should use. 'Ser' is used to describe permanent c...

Question7. A complex number z is given by z = a + 2i where a is a non-zero real number. (a) Find z2 + 2z in the form x + iy where x and y are real expressions in terms of a. (4) Given that z2 + 2z is real...

An “antigen” is a specific foreign molecular entity which is bound by antibodies during an immune response. Examples of antigens include peptides from bacterial surface proteins, which signal the presence...

a)starting from ax²+bx+c=0, divide through by a, x²+(b/a)x+c/a=0, complete the square (x+(b/2a))²-(b/2a)² +c/a=0, expand (x+(b/2a))²-(b²/4...