Q: Three-prong plugs, circuit breakers, and gfci outlets are safety features that recognize the danger of what? Choices: - heat - magnetism - gravity - electricity A:
electricity

Q: What system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus? Choices: - male reproductive system - female uterus system - female hormone system - female reproductive system A:
female reproductive system

Q: Atoms of different elements can combine in simple whole number ratios to form what? Choices: - mixtures - carbon compounds - combinations - chemical compounds A:
chemical compounds