Proteins, which are compounds made of nitrogen-rich amino acids, create waste products in the body of animals that must be eliminated. which toxic compound is the primary concern of animal waste systems? a. urea b. ammonia c. ammonium d. nitrogen

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them