Q: What is the most important source of electromagnetic waves on earth? Choices: - cell phones - wireless networks - radios - the sun A:
the sun

Q: When something is described as "hydrophilic", you can determine something about how it interacts with what? Choices: - hydrogen - air - iron - water A:
water

Q: Q: What term is used to describe the tendency of a mineral to break along certain planes? Choices: - tooth decay - porosis - erosion - cleavage A:
A: cleavage

Question: Q: Which stage of life is typically easier for learning multiple languages? Choices: - adolescenc - infancy - adulthood - childhood A:
Answer: childhood

*Question*
Q: The pine tree is the sporophyte; its sporangia are located on scalelike structures packed densely where? Choices: - in the limb tips - in the bark - in the needles - in cones A:
**Answer**
in cones

(Question)
Q: What type of molecules are found in the hydration shell of a dissolved ion? Choices: - iron - carbon - oxygen - water A:
(Answer)
water