Answer:
1. Observations
2. Hypothesis
3. Experimentation
Explanation:
Observations are made, Hypothesies are formed from observations, and experimnets help alter and comfirm hypothesis.
Since 1800's, industrialization has changed land use and led to the growth of large cities in many countries. During this industrial era, population and production was emphasized where the invention of railroads increase the opportunity to travel or go to other places in reduced cost. In addition, manufacturing companies has began its operation, permitting migration from rural to urban areas that develop into great cities.
To believe and make people know we can do this
OEM = Original Equipment Manufacturer