Q: What type of pollution comes from sewage, storm drains, septic tanks, boats, and runoff from yards? Choices: - collective - urban - social - municipal A:
municipal

Q: Hot material from near the sun's center rises in which zone? Choices: - thermosphere - radiative zone - drifting zone - convection zone A:
convection zone

Q: Q: Oil is found in the porous rock layer and trapped by the what? Choices: - \ - crystalline layer - mantle - impermeable layer A:
A: impermeable layer

Question: Q: What is the jelly-like material in which the contents of the cell are suspended? Choices: - jam - cortisol - mitochondrial - cytosol A:
Answer: cytosol

*Question*
Q: What term describes weathering that occurs as water expands when it freezes, wedging apart rock? Choices: - chemical weathering - cleavage - erosion - mechanical weathering A:
**Answer**
mechanical weathering

Q: Skeletal muscles must work in pairs to move bones back and forth at a joint because they can only do what? Choices: - vibrate - pull - expand - contract A:
contract