the definition found in a dictionary
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The rapid expansion of a species into regions where it had not previously existed, often as a result of human agency.
Media, flyer's, news letters, word of mouth, advertisements, anything that might be used to sway opinion in a preferred direction, controversy, conflict.
Mutualism is the biological interaction between two species of organisms, in which both parties benefit. It can be as simple as bees getting nectar from flowers while also pollinating them, or more...