Mammals metabolize ammonia into a molecule called urea: As you can see, this molecule contains two atoms of nitrogen. Although it requires metabolic energy to build, it also is less toxic than ammonia, and it requires less water to flush from the system.Your urine's main nitrogenous waste product is urea.ammals metabolize ammonia into a molecule called urea: As you can see, this molecule contains two atoms of nitrogen. Although it requires metabolic energy to build, it also is less toxic than ammonia, and it requires less water to flush from the system.
Tree squirrels are squirrels that live in trees and ground squirrels, like chipmunks and prairie dogs, are squirrels that live in the ground. As a general rule, tree squirrels have longer life spans than ground squirrels.1.
Red squirrels, also called pine squirrels, are red. These squirrels are less common and smaller than gray squirrels. Red squirrels prefer evergreen trees and mainly live in Western Maryland. Red squirrels eat a variety of foods and are even known to tap sugar maple trees to feed on the sugary sap.ive species of squirrels can be found in Maryland: red squirrel, gray squirrel, southern flying squirrel, eastern fox squirrel and the Delmarva fox squirrel.