Answer to Question 1
The Gossypium barbadense variety of cotton was less successful because it could only be grown along the coastal areas of the South and the Caribbean. The Gossypium hirsutum variety of cotton was more successful because it could be grown in areas away from the southern seacoast, and because the invention of the cotton gin made it easier to separate the cotton seeds and fiber that previously made this variety difficult to work with.
Answer to Question 2
It is believed that humans have used cotton in North America for at least 7,000 years.
Elastic fibres are made of elastin, one type of structural protein found in the ECM of animal cells
Men who are at risk for heart disease and report work-related stressors are at greater risk of death ...
A typical distributor-type diesel injection pump showing the pump, lines, and fuel filter.
Proposed structure for keratin-type intermediate filaments
Action Potential in a Ventricular Fiber