Pit bull terriers, German shepherds, and Rottweilers were the offending breeds implicated in our study, and have accounted for the majority of dog bites according to other investigators.hese actions range from outright bans on the possession of pit bull-type dogs, to restrictions and conditions on pit bull ownership. They often establish a legal presumption that a pit bull-type dog is prima facie a legally dangerous or vicious dog.
Common causes of oxygen depletion include cloudy weath-. er, sudden death of algae or plants in the pond, and wind. mixing the pond water. Just two to three days of overcast. weather can cause oxygen production to diminish. When. the oxygen demand remains the same or increases, oxygen. levels begin to decrease.
The dissolved oxygen level can be an indication of how polluted the water is and how well the water can support aquatic plant and animal life. Generally, a higher dissolved oxygen level indicates better water quality.If dissolved oxygen levels are too low, some fish and other organisms may not be able to survive. Much of the dissolved oxygen in water comes from oxygen in the air that has dissolved in the water.Some of the dissolved oxygen in the water is a result of photosynthesis of aquatic plants. On sunny days, high DO levels occur in areas of dense algae or plants due to photosynthesis.he dissolved oxygen level can be an indication of how polluted the water is and how well the water can support aquatic plant and animal life. Generally, a higher dissolved oxygen level indicates better water quality.