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Start by factoring out the common term, so in this case a. a(q - c) = d Now divide by a on both sides to isolate the (q - c) (q - c) = d/a Now add c on both sides to make q the subject q = c + d/a

1) An ecosystem is an ecological system 2) An ecosystem is a system of plants and animals that live together in a particular environment . The animals and plants interact with each other and their surroundin...

1) River pollution can affect people, wildlife and the environment . 2) Loss of oxygen: River creatures and river plants need oxygen to survive. When raw (i.e. untreated) sewage enters a river system it is b...

1) In the lower course of the river the gradient is gentler than in the upper course. The river has more energy and the volume amount of water is high. 2) In the lower course there is more lateral (sideways)...

To achieve an A* in your synoptic essays you must show breadth of knowledge as well as depth. What examiners want to see when they mark your answers is that you have a thorough understanding of the concepts ...