Answer the following question given this paragraph: Atoms are electrically neutral, but if they lose or gain electrons they become charged particles called ions. Q: What do atoms become if they lose or gain electrons? Choices: - toxins - particles - particulates - ions A:
ions

Answer the following question given this paragraph: Q: Eggs are produced in what organs and, upon fertilization, develop in what other organ? Choices: - fallopian tubes, ovaries - cervix, ovaries - uterus, vagina - ovaries, uterus A:
ovaries, uterus

Answer the following question given this paragraph: The earliest and simplest vertebrates are fish. Fish also have the greatest number of vertebrate classes. Think about some of the fish you are familiar with, such as fish you eat or fish you may have seen in aquariums. Q: What are the earliest and simplest vertebrates? Choices: - whales - birds - bears - fish A:
fish