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The answer is Diffusion.This is random movement of a substance from an area of high concentration (the air) to a region of low concentration (inside the organism). In this case, the substance dif...

Metals have a distinct bonding known as metallic bonds, where there is a sea of delocalised electrons and metal ions present. This is due to electrons leaving the atom forming a positive metal ion and a s...

Firstly, it is important to understand here that "expand" means multiply the two brackets. A logical approach can be taken to this question. Deal with the first term (x^2) of the first bracket: ...

Prokaryotes are single-celled organisms (e.g. bacteria) which lack any membrane bound organelles. Thus, they are anuclear (have no nucleus) and their DNA is circular and found in the nucleoid area of the ...

Since the equation has a cubic term, we can expect the curve to have certain properties: it should have three points where the graph touches the x-axis, two turning points, of which one should be a minimu...