This topic contains a solution. Click here to go to the answer
|
Author Question: Threshers appeared in large numbers after 1820, spurring much greater productivity in grain ... (Read 15 times) |
Did you know?
In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
Did you know?
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.