The function of the urinary system is to eliminate waste produced during the metabolic process. Ammonia, a nitrogenous substance, derived from amino acids and produced by the body and extremely toxic, needs to go through a process to be converted into urea or uric acid and eliminated in the urine. Explain the urea production process, from the liver to the urethra

In what for do plants utilize nitrogen? why do they need nitrogen?

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

What are some natural processes that represent physical and chemical changes?