If nephrons are the structural and functional units of an organ that filters blood, then what are the structural and functional units of the organ that filters blood? Answer choices: - lungs - nephrons - humans - pancreas - eardrum - alveoli - epidermal - organ
nephrons

If sandstone is formed by deposition, then how is sandstone formed? Answer choices: - less water - In sediment - rainfall - calcite - growth - Water expanding - Deposition - movement
Deposition

Q: If the Himalayas were formed by earthquakes, then the Himalayas were formed by what? Answer choices: - earthquakes - snowfall - chemical changes - movement - fires - graptolites - rain - calcite
A: earthquakes

Question: If sports have a positive impact on a human's health, then what have a positive impact on a human's health? Answer choices: - sweating - nutrients - tuna - animals - hormones - food - clams - sports
Answer: sports

*Question*
If condensation causes fog, then what is a cause of fog? Answer choices: - evaporation - heating liquids - condensation - transpiration - scattered light - Pollution - Water expanding - droplets of lemonade
**Answer**
condensation

*Question*
If polar bears can generate heat by shivering, then what can polar bears do to generate heat? Answer choices: - make fire - eat ice - stay warm - nothing - fur - motors - shiver - sweating
**Answer**
shiver