In 60 years, from 1801 to 1862, the amount of cotton picked daily by an enslaved person increased 400 percent. The profits from cotton propelled the US into a position as one of the leading economies in the world, and made the South its most prosperous region.
Answer:
The effects of the Industrial Revolution on agriculture can best be seen in the invention of mechanized farm equipment.
Explanation:
A is not correct because using animals as labor is an ancient method used in agriculture, and it is also in no way related to the Industrial Revolution.
B is not correct because it represents a planting method that doesn't necesseraly require any help from mechnization.
C is correct because the mechanized equipment is what was introduced in agriculture and propelled it to new levels.
D is not correct because the introduction of hybridized crops has been a result of the development in other spheres.
Answer: The Earth is a closed system for matter
That is a list of all basic elemental materials on our planet. Because of gravity, matter (comprising all solids, liquids and gases) does not leave the system.
Answer:

Explanation:
Angle of depression = 
b = Height of building = 42 feet

p = Distance from the car to the base of the building
From the trigonometric identities we get

The distance from the car to the base of the building is
.
<span>When a range of mountains can be measured tens to hundreds of kilometers in length as well as width and is located near an active tectonic plate boundary or coast, it is called a mountain belt.
Mountain belts are </span><span>partially composed of regionally metamorphosed rocks.</span>