Answer:
b.They separate markets, thereby increasing transportation costs.
Explanation:
Deserts and tropical forests seem to be opposites, but they all have separate markets, thereby increasing transportation costs.
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Astronomy.
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Answer: refers to sensory experiences that occur in the absence of real stimuli
Explanation: Technically, Catatonia can be defined as a severe psychiatric condition, often associated with schizophrenia, that is characterized by a tendency to remain in a rigid state of stupor for long periods which give way to short periods of extreme agitation.
The short periods of extreme agitation can be said to be sensory experiences that occur in the absence of real stimuli.
Ask Trump! He will tell you 'mexican illegal immigration' and so if he's president he will 'build a wall'
There is quite a bit of immigration from UK and European countries, as well as from Central America.