Answer:
Variation of natural phenomena is also a possible source of error.
Explanation:
Variation of temperature, humidity, gravity, wind, refraction, magnetic declination etc. are most common natural phenomena which may cause measurement errors. If they are not properly observed while taking measurements, the results will be incorrect.
Well inequality, with race can bring inequality
I believe that is an ecosystem
Answer:
B) 15-30 degrees north and south of the equator.
Explanation:
Got it right on edge. :)