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Answer:

Natural cycle: a natural process which regulates Earth's systems. Solar cycle: changes in the amount of activity on the sun's surface. Carbon dioxide goes through natural cycles over hundreds of thousands of years. ... Earth goes through many natural cycles and climate is no exception.

Explanation:

for each student . There are 18 students in his class Part A Round each fac
The scores of Tim’s first four math tests are 82%, 90%, 78%, and 100%. If Tim wants to have a test average of 90%, what must the average of Tim’s next two tes
How can the constitution be amended
A common antacid contains the acid-neutralizing agent sodium hydrogen carbonate. Write the chemical formula for sodium hydrogen carbonate.