In florida, humans have caused more than 2,000 manatee deaths since 1974. collisions with boats and boat propellers cause roughly twenty-five percent of all manatee deaths. another significant cause of the declining population is the disappearance of manatee habitats, resulting primarily from coastal development, water quality problems, and the change in water levels caused by florida's flood control systems. a constitutional amendment has been proposed that would protect natural systems and biological diversity. which would be the most likely requirement of a constitutional amendment to protect the manatee population? a. moving manatees to locations outside of the everglades b. restricting manatee hunting in the everglades to certain times of year c. raising more manatees in captivity d. placing a limit on speedboat use in manatee habitats

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

a- all cells come from pre-existing cells

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.