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.
Squirrel monkeys live in primary and secondary forests in countries such as Costa Rica, Brazil, Panama and Guyana. A primary forest is one filled with old growth, and a secondary forest is one recovering from devastation, such as from a fire or massive tree harvesting.quirrel monkeys eat mostly fruits and insects. Tom Brakefield/Stockbyte/Getty Images. Squirrel monkeys play an important ecosystem role in Central and South America; they're an important part of the diet of some predators, and they control populations of insects by preying on them.