It is estimated that 99 percent of all production problems in crawfish ponds are related to poor water quality. Dissolved oxygen (D.O.) is the most serious problem, but pH, total hardness, total alkalinity, ammonia, nitrite, hydrogen sulfide, and iron can also affect crawfish production.
DNA Land is a place where you can learn more about your genome while enabling scientists to make new genetic discoveries for the benefit of humanity. Our goal is to help members to interpret their data and to enable their contribution to research.
Dry land covers just under one-third of Earthâs surface. It is made up mostly of seven huge landmasses called continents, plus many smaller islands. The largest continent, Asia, is 16,838,000 sq miles (43,608,000 sq kilometers).The smallest continent, Australia, is 2,968,124 sq miles (7,686,850 sq kilometers).t is made up mostly of seven huge landmasses called continents, plus many smaller islands. The largest continent, Asia, is 16,838,000 sq miles (43,608,000 sq kilometers).