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As some products are designed with a limited lifespan, companies can use cheaper parts for their production.Repairing products is often more expensive than replacing them, which has caused the society to ...

Consider the general equationdy/dx + Py = Qwhere P and Q are functions of x.R (which will be introduced later) is also a function of x.
So, all of a sudden, we are going to just state the product rul...

There are many instances when we need to use the subjunctive. As a verbal mood (as opposed to a tense), you should use the subjunctive when expressing opinions, feelings/emotions, doubt, ...

When thinking about structuring an English A Level paragraph you need to split it into 4 sections;Point- what point are you making in this paragraph and how does it link into the question asked.Evidence- ...

Proteins serve many functions important for life and their function depends on their structure. We can say that proteins are organised into 4 layers of 'structure'. At the first level we have many molecul...