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Basically, to avoid making mistakes, you should only use the present participle to describe a situation in which a person is actively doing something in that precise moment. For example if someone asked you ...

Unfortunately , like with many things in French, the prepostition that a verb or phrase takes is something you just have to learn by heart! Fortunately, below I have made a list of the verbs and prepositions...

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...