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When a cell divides, the number of chromosomes in that cell does not change. So if a cell had 40 chromosomes in it before it divided, it would still have 40 chromosomes in it after it had divided.

Indicator species are organisms whos presence or absense may indicate something about the environement. For example, an increase in organisms that are not dependant on oxygen to survive (also known as ana...

You should start you revision as soon as possible so that you have the time to put the different ideas, facts and names in order and form stable relationships between names and theories! You could even st...

The best strategy would be to firstly read the whole text in order to get the main idea. Then read each paragraph of the text aiming to get the main idea behind it. Very often the first sentence of a para...

Command words are important and you should check carefully exactly what the question is actually asking for. If a question asks you to 'compare', all you need to do is point out similarities and differenc...