Position and movment are controlled and uncontrolled by climax or orgasms
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Ask your teacher. Depending on what he/she wants, the teacher may or may not deduct points from your assignment. Good luck!
The correct answer is - A. A few centimeters a year.
Earth's crustal plates move very slowly, between 2 cm and 5 cm (depending on the plate) annually. This is the reason why it takes millions of years for them to significantly change their position, and with it the appearance of our planet. These crustal plates are slowly moving around the planet because they are powered by flow in the interior mantle.
Ozone would be the secondary pollutant because it is caused when two primary pollutants react. Hope this helps!