Q: What do corals secrete that builds up to become a coral reef? Choices: - actuators - tentacles - saliva - exoskeletons A:
exoskeletons

Q: Scientific notation expresses a number as a what, times a power of 10? Choices: - fraction - function - expression - coefficient A:
coefficient

Q: What effect does taking anabolic steroids have on testosterone production? Choices: - does nothing - eliminates it - increases it - reduces it A:
reduces it