Answer:
1. Cotton Gin: In colonial times, cotton cloth was more expensive than linen or wool because of the extreme difficulty of separating seed from the clinging fibers. One man could pick the seeds from only about 1 pound of cotton fiber per day.
2. Reaper/Binder: Small grains had been harvested by hand for centuries, cut with sickles or scythes, hand-raked and tied into sheaves. Grain harvesting machines first appeared in Great Britain in about 1800, and in the U.S. a decade or two later, but most failed. Obed Hussey and Cyrus McCormick developed successful reapers during the 1830s.
3. Thresher: When grain was being cut by hand, the method for separating the kernels from the straw was equally slow and labor intensive. Grain was hauled to a barn where it was spread on a threshing floor and either beaten with hand flails or trampled by animals. That knocked the kernels free of the straw, which was then raked away. The remaining mixture was winnowed by tossing it into the air where the wind was relied upon to blow the chaff and lighter debris away from the heavier grain, which fell back onto the threshing floor.
4. Combined Harvester-Thresher: By the 1920s the steam traction engine was on it's way out, but it paved the way for the gasoline tractors that followed.
Explanation:
i have more like...
**Steam Engine**
**Auto Truck**
**Gasoline Tractor**
**General Purpose Tractor**
**Hydraulic Implement Lift with Draft Control**
The second amendment gives Americans the right to "keep and bear arms"
Hope I helped
A) to amuse, because the passage contain many funny jokes and asides.
Explanation:
While any SAT article may have a funny interpretation or an aside it is unlikely that a possible interpretation of only the funny or amusing elements just for the sake of being amusing would be required to be talked about on the text.
If<u> the humor is to be interpreted it has to be along with the theme that the passage conveys that it should work and not entirely on its own as being amusing for amusement's sake.</u>
Answer:
Asteroids
Explanation:
Much of our earth's water supply comes from the asteroids.
More research done suggested that much of the earth's water is being delivered by the asteroids.
The origin of earth's water can be tracked down by analyzing the ratio of the two isotopes of hydrogen molecule. On isotope is the ordinary hydrogen and the other is the deuterium.
Research and study suggests that there is a close match between the earth water's ratio of deuterium to hydrogen to that of the asteroids, which is rich in water and elements such as nitrogen and carbon.
Thus the answer is --- "Asteroids"
