1 Your heart rate. 2  Your heart rate offers a more objective look at exercise intensity. 3  In general, the higher your heart rate during physical activity, the higher the exercise intensity.
Major uses of cotton fibres. Source: Adapted from: Cotton Facts, International Cotton Advisory Committee (ICAC), 2003. The major end uses for cotton fibre include wearing apparel, home furnishings, and other industrial uses (such as medical supplies). The cotton fibre is made primarily into yearns and threads for use in the textile and apparel sectors (wearing apparel would account for approximately 60% of cotton consumption).
The cotton gin greatly reduced the time and labor needed to make cotton fiber ready for sale to textile mills. Explanation: Each cotton boll contains seeds, which must be removed before the cotton fiber can be used to produce thread and then cloth. Prior the the invention of the cotton gin by Eli Whitney in the late 18th century, this work was done by hand; it was labor intensive, not to mention tedious; much work was required to prepare even a small amount of cotton for sale. The cotton gin was a machine that could be used by anyone; raw cotton was placed in a hopper, a hand crank furnished power, and the seeds were quickly removed. This invention quickly made cotton production an attractive option for southern planters, and new regions in the South were opened and turned into cotton plantations.