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Blake's London expresses ideas of oppression through a variety of means. Structurally, the poem's rigid rhyme scheme of ABAB, in tandem with the fixed structure of four quatrains, reflects how London constri...

Base Case n=1sum_1(r 3^(r-1))=1 3^0=1=1/4+(3^1/4) (2-1)=1/4+3/4=1 Assume true for n=ki.e. sum_k(r 3^(r-1))=(3^k/4) (2k-1) then for n=k+1sum_(k+1)(r 3^(r-1))= sum_k(r 3^(r-1))+(k+1) 3^k =(3^k/4) (2k-1)+(k+1) ...

Similarities: - Both consist of a pentose sugar , a phosphate group and 4 nitrogenous bases. - Both are joined by covalent phosphodiester bonds between the phosphate and pentose sugar groups. Differences: - ...

NB this question is discussion based and could be approached from many different angles and include more ideas than I have covered below. I have split this question into 2 parts. Firstly you could dress why ...

-There are a large number of alveoli , increasing the surface area available for gas exchange. The alveoli have many infoldings , further increasing the surface area. - The walls of the alveoli are thin , th...