Q: Q: What can often be used to measure distance? Choices: - histograms - models - graphs - maps A:
A: maps

Q: Q: What kind of interactions do polar substances experience? Choices: - monopole-dipole interactions - axial interactions - monopole-monopole interactions - dipole-dipole interactions A:
A: dipole-dipole interactions

Q: Q: What system lets flatworms maintain a proper balance of water and salts? Choices: - homeostasis - nervous - digestive - excretory A:
A: excretory

Q: Q: What part of the rainforest commonly has ferns and other ground plants? Choices: - forest floor - canopy layer - emergent layer - understory A:
A: understory