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.
Yes, Red Squirrels prefer to live among the branches of trees, however, they're being pushed out of their habitats by Grey Squirrels, as the Greys digestive system can process â¦ a more diverse source of foods, their systems can digest foods that have a high tannin content, whereas the Red Squirrel is limited to low tannin sources of foods, plus the Grey Squirrel carries a disease that doesn't affect it, but is deadly to the Red Squirrel population if contracted.