*Question*
Q: The reactions between alkali metals and water are particularly vigorous and include the rapid production of large quantities of what gas? Choices: - helium - oxygen - carbon - hydrogen A:
**Answer**
hydrogen

*Question*
Q: Terrestrial biomes are associated with land, while aquatic ones are associated with what? Choices: - plants - air - blood - water A:
**Answer**
water

*Question*
Q: A small quake preceding a large quake is called what? Choices: - aftershock - warning shock - preshock - foreshock A:
**Answer**
foreshock

*Question*
Q: How many chambers are in a reptiles heart? Choices: - ten - two - five - three A:
**Answer**
three