Top answers

A large amount of sewage enters a river and many of the fish die. Sewage contains bacteria and organic material. Explain why the fish died.

Bacteria in the water decay organic matter in sewage -> respire aerobically -> uses the O2 in the water and reduces O2 concentration -> fish have less O2 to aerobically respirate -> fish die
CH
3333 Views

Solve algebraically the simultaneous equations, x^2 + y^2 = 25 and y – 3x = 13

First you need to pick a variable to solve for( irrelevant which one is picked) so I will choose to solve y first as in this question it is easier (as y has no coefficient). So make y the subject of the simp...
BU
Answered by Benjamin U. • Maths tutor
3334 Views

How would I answer a question asking me to describe two theories of population growth?

So one theory is the Malthusian theory which was first discussed by Thomas Malthus in 1798 when Malthus became concerned about rapid population growth. He came up with a theory focusing on food availability ...
WL
Answered by Whitney L. • Geography tutor
3363 Views

How do I write a good paragraph?

Once you have a structure to follow, writing a paragraph is a lot easier. The following structure works for any paragraph, no matter how long it is. It's called PEEL. P - Point. Try and summarise the point y...
IC
Answered by Isobel C. • English tutor
2048 Views

How do I structure an essay?

Firstly, keep calm! This is your opportunity to have fun exploring your own ideas on paper. When you get the question, try to break it down. For example, if it's a "how far do you agree that..." qu...
IC
Answered by Isobel C. • English tutor
2162 Views