Q: Adding carbon to iron makes what type of metal? Choices: - ions - titanium - plastic - steel A:
steel

Q: When current flows in just one direction, what is it called? Choices: - mono-current - reactant current - alternating current - direct current A:
direct current

Q: Q: What are hot fragments of rock called? Choices: - obsidian - magma - shards - pyroclasts A:
A: pyroclasts

Question: Q: What element is essential for amino acid and nucleic acid production? Choices: - oxygen - carbon - hydrogen - nitrogen A:
Answer: nitrogen

*Question*
Q: Where is the fruiting body normally produced in relation to the food source? Choices: - at the root - in the soil - underneath the surface - at the surface A:
**Answer**
at the surface

(Question)
Q: Stis are diseases caused by what that spread through sexual contact? Choices: - amoeba - ecosystems - parasites - pathogens A:
(Answer)
pathogens