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The imperfect tense is used when there is no definite conclusion to an action or event- the event/action took place over an undefined period of time, without a distinct knowledge of it ending:e.g/ 'I used...

3x(squared)-7= 101first we move the 7 across but when we move across an = sign we do the opposite so 101+7now our equation is 3x(squared)=108
now we need to move the 3 across but to do this we need ...

An endocrine gland is a set of cells that secrete hormones directly into the blood. An example would be the pituitary gland.
Another type of gland is an exocrine gland but these use ducts to secrete ...

Therefore x=10, x=2

Waterfalls are found in the upper course of the river where a harder, more resistant band of rock sits on top of a softer, less resistant band of rock. The softer rock is more easily eroded, so it wears a...