(Question)
Q: Destructive interference in waves occurs when what things overlap? Choices: - two waves - three waves - three troughs - two troughs A:
(Answer)
two troughs

(Question)
Q: Within an organism, the cells that give rise to the next generation are known as germ cells, while those that do not (that is, the cells that die when the organism dies) are known as what cells? Choices: - xylem - neural - cloning - somatic A:
(Answer)
somatic

(Question)
Q: What can lead to a loss of genetic variation within populations? Choices: - migration - adaptation - natural selection - genetic drift A:
(Answer)
genetic drift