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the xylem transports water and minerals the plants need. water is taken up from the roots normally and is needed at the leaves. so the direction of flow in the xylem is only upwards. also is made of dead ...

The organisms are unable to exchange genes outside of the isolated population. There may be different selective pressures which the organisms must adapt to. This means the features of the species may chan...

Factorising is taking an expression of some sort and simplifying it down to its component parts so that they are presented in the simplest way possible. For example, take the expression (15pq + 10pqr). Fi...

bell hooks argues that inequality is not just related to one's gender, and an intersectional approach must be taken to fully understand inequality. How people are portrayed in the media may also relate to...

Hypodermic Needle Theory was developed by the Frankfurt School in the 1930s. It suggests that the media injects messages into the audience who passively accept these messages without challenge. This theor...