Q: What speeds up chemical reactions inside cells? Choices: - nucleus - inhibitors - electrodes - catalysts A:
catalysts

Q: An solid object with an irregular shape can be measured via what method? Choices: - radiation - vibration - variation - displacement A:
displacement

Q: Q: The electrolysis of what substance produces hydrogen and oxygen gases Choices: - cholesterol - carbon dioxide - hydrocarbon - water A:
A: water

Question: Q: What is the name for the term that describes deep ocean water rising the surface? Choices: - percolating - leaking - up-rising - upwelling A:
Answer: upwelling

*Question*
Q: What are fresh water biomes defined by? Choices: - high salt content - moving water - animal species - low salt concentration A:
**Answer**
low salt concentration

Q: Q: The energy for an ecosystem can come from sunlight or _________? Choices: - radiation compounds - fossil fuels - rain - chemical compounds A:
A: chemical compounds