Q: The most magnetic material in nature is what? Choices: - crystals - molecules - gold - magnetite A:
magnetite

Q: What kind of weathering is abrasion? Choices: - molecular - electromagnetic - natural - mechanical A:
mechanical

Q: Q: Acids turn blue litmus paper which color? Choices: - grey - white - purple - red A:
A: red

Question: Q: What is the name of the command center of the cell? Choices: - mitochondria - molecules - vacuole - nucleus A:
Answer: nucleus

*Question*
Q: What organism is an important pioneer on cleared rock and soil surfaces, such as volcanic flows and burned forests? Choices: - cysts - algae - pigment - lichen A:
**Answer**
lichen

(Question)
Q: Rust consists of oxides of what element? Choices: - Copper - Gold - Aluminum - iron A:
(Answer)
iron