Problem:OPTIONS:
- lava
- hydrogen
- vapor
- carbon

Q: When volcanoes erupt, what from the mantle is released as carbon dioxide into the air? A:
****
A: carbon

Problem:OPTIONS:
- a single point
- their laurels
- a pool of water
- a surface

Q: Static friction acts on objects when they are resting on what? A:
****
A: a surface

Problem:OPTIONS:
- lakes
- continents
- ecosystems
- oceans

Q: We divide up the earth's seas into five what, which are really all interconnected? A:
****
A: oceans

Problem:OPTIONS:
- cytoplasm
- osmotic fluid
- chloroplasm
- cell sap

Q: What is the liquid inside the central vacuole called? A:
****
A:
cell sap