(Question)
Q: The hormone androgen increases aggressiveness and promotes what type of behaviors? Choices: - nervous - asexual - cognitive - sexual A:
(Answer)
sexual

(Question)
Q: Humans have an estimated 20,000 to 22,000 of what units of heredity? Choices: - eggs - cells - chromosomes - genes A:
(Answer)
genes

(Question)
Q: Metalloids, metals, and nonmetals are all classes of what? Choices: - compounds - protons - matter - elements A:
(Answer)
elements