Ques:Q: What are mammals called that reproduce by laying eggs? Choices: - marsupials - Fish - amphibians - monotremes A:

Ans:monotremes
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Ques:Q: What tissue do clubmosses have that mosses do not? Choices: - dioxide tissue - nuclei - chorophyll - vascular tissue A:

Ans:vascular tissue
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Ques:Q: Osteoporosis, osteoarthritis, fractures, and sprains are problems affecting what system? Choices: - digestive system - nervous system - tissues system - skeletal system A:

Ans:skeletal system
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Ques:Q: How do you calculate the atomic mass of an element? Choices: - add neutrons and electrons - count the electrons - multiply protons by neutrons - add the protons and neutrons together A:

Ans:
add the protons and neutrons together
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