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Phobia refers to a mental health condition where the irrational fear and anxiety is performed. Psychologists have develop a variety approaches of treatment of this anxiety disorder including Systematic De...

Primary succession begins with newly formed land such as bare rock of volcanic island.  Pioneer species such as lichens and mosses colonise the rock. When these pioneer species die organic matter builds u...

Osmosis is the free movement of water molecules across a partially permament member from high water potential to low water potential, down the water potential gradient, without the input of energy.

Firstly outline the factors needed for seed germinination:
There are 3 essential conditions required for a seed to germinate - a seed will not germinate until these external ...