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It is important to come up with a (rough) thesis as quickly as possible. This should basically be the answer to the question, that serves as a starting point for your essay and also allows you to manipula...

Hydrothermal vents form where cold seawater percolates down into the Earth's oceanic crust, and is superheated by the geothermal gradient. Under the confining pressure of the surrounding rock and the over...

To expand brackets you should multiply each term with every other term. Here it would be: 3a²-3a+4a-4 Collecting the a terms, this simplifies to: 3a²+a-4.

The "future simple" tense is used when one wants to describe an action that will take place sometime in the future. In English, we use "will" or "shall" + a main verb, for eg...

• When the action potential reaches the pre-synaptic knob, voltage gated Ca²⁺ channels open which allows Ca²⁺ into the pre-synaptic knob - This causes vesicles which contain neur...