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The turning point of a curve occurs when the gradient of the line = 0The differential equation (dy/dx) equals the gradient of a line. Therefore in this case the differential equation will equal 0.dy/dx = ...

It varies depending on what the text type is. If it's an online piece, such as a blog entry, you'll want to note the significance of the wider reach of the text. Look for social media buttons, as well as ...

Muscle cells are present in the stomach wall so that they can contract and move the food. This aids digestion and the action of enzymes

The movement of molecules from an area of high concentration to low concentration across a membrane using energy.

I strongly advise students to follow the PEEL approach.First you write your point, in a relatively short, focused and simple sentence. You proceed to offer the quote from the text that your point relates ...