Q: Where does the purple color in quartz come from? Choices: - aluminum - dirt - bronze - iron A:
iron

Q: In headwater streams, what plant process is mostly attributed to algae that are growing on rocks? Choices: - mitosis - symbiosis - reproduction - photosynthesis A:
photosynthesis

Q: Q: What is the climate of a small area called? Choices: - ecosystem - biome - microevolution - microclimate A:
A: microclimate

Question: Q: The other ammonium ions are changed into nitrogen gas by what? Choices: - fluctuations bacteria - fungi - accompanying bacteria - denitrifying bacteria A:
Answer: denitrifying bacteria

*Question*
Q: What are the nonliving parts of ecosystems like soil and air called? Choices: - exemplified factors - irrelevant factors - inorganic factors - abiotic factors A:
**Answer**
abiotic factors

Q: Q: When a solution freezes, only what particles come together to form a solid phase, while the presence of solute particles interferes with that process? Choices: - pigment - hydrogen - diluent - solvent A:
A: solvent