The increased deployment of railroads in the 19th and 20th centuries had several effects. From the answers below, what was NOT an effect of the increased deployment of railroads?

a. Establishment of time zones
b. Increased use of coal
c. Increased deforestation
d. Development of the light bulb
e. Development of the telegraph

Ahill is made of rock particles of different sizes. which of these agents of erosion probably caused the hill to form?

Long ago, people who lived in coastal north africa most often interacted with

The solstices and equinoxes, and the number of hours of daylight associated with each, are major factors in the seasons. use the drop-down menus to identify the month when each of these events occurs. the winter solstice in the northern hemisphere: an equinox in both hemispheres: the summer solstice in the northern hemisphere: