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Both of these tenses are used to denote events that occured in the past, but they are troublesome for several reasons and used in broadly different contexts. First, it is important to note that the imperf...

The at first can seem very challenging and you won't be able to tackle this question quickly using simple factorisation, which you can often do for many questions. It is best in this case then to use the ...

In Spanish, nouns are either masculine or feminine. The articles for feminine nouns are la or una and the articles for masculine nouns are el or un. Generally, feminine nouns begin with an a for example, ...

DNA is found in the nucleus of all human cells (except red blood cells). Its double-stranded, helical structure contains all of the information required for the body to produce new proteins- it simply nee...

There are four main differences; 1. DNA - Eukaryotes have linear DNA whereas prokaryotes have circular DNA. The DNA in eukaryotes is also protien bound, this is not the case in prokaryotes. 2. Organelles ...