(Question)
Q: What is a popular treatment for kidney failure? Choices: - psychotherapy - metastasis - electrolysis - dialysis A:
(Answer)
dialysis

(Question)
Q: What keeps various species from mating and reproducing outside their own species? Choices: - digestive system incompatibility - brain organ incompatibility - cancer organ incompatibility - reproductive organ incompatibility A:
(Answer)
reproductive organ incompatibility

(Question)
Q: What alloy is made from copper and zinc? Choices: - iron - stele - manganate - brass A:
(Answer)
brass