Top answers

What is eutrophication and what are its effects?

Eutrophication occurs when excess nutrients, like nitrates and phosphates, enter a body of water. These excess nutrients cause an increase in plant and algal growth in the water, often leading to an algal bl...
IH
6243 Views

What are the secrets to the A* grade?

The difference between the A* and lower grades in A-Level English - and the following is true for both the exam and coursework - is the ability to do two things: an analysis of techniques of language, struct...
BW
4460 Views

How can I evaluate a source?

When confronted with an historical source, there are a few easy steps you can take to immediately assess how reliable it is. First of all, you need to decide whether the source is primary or secondary. A pri...
RR
Answered by Ruby R. • History tutor
12615 Views

The gradient of a curve is defined as Dy/dx = 3x^2 + 3x and it passes through the point (0,0), what is the equation of the curve

Integrate this = (3x^3)/3 + (3x^2)/2 + c So y = x^3 + (3x^2)/2 + c Using point (0,0), 0 = 0 + 0 + c so c = 0. Full equation of the curve is therefore x^3 + (3x^2)/2
LT
Answered by Laura T. • Maths tutor
6397 Views

Simplify fully: (5 +√7)/ (2+√7)

Can show working on a whiteboard.
TA
Answered by Tony A. • Maths tutor
6581 Views