Q: The earth's magnetic poles have done what repeatedly in the past? Choices: - rotated - stayed the same - demagnetized - switched places A:
switched places

Q: Is sweat an exocrine or endocrine substance? Choices: - neither - both - exocrine - exocrine A:
exocrine

Q: Thylakoids in a chloroplast contain what plant pigment? Choices: - melanin - dye - ultramarine - chlorophyll A:
chlorophyll

Q: As lava cools, tiny iron-rich crystals line up with earth's what? Choices: - gravitational field - oceans - molecular field - magnetic field A:
magnetic field