Q: Fact 1: Nephrons are the structural and functional units of the kidneys. Fact 2: Blood is filtered in the kidney. Given the two facts above, what are the structural and functional units of the organ that filters blood? | OPTIONS:
- lungs
- nephrons
- humans
- pancreas
- eardrum
- alveoli
- epidermal
- organ
A: nephrons

Q: Fact 1: Evolution occurs by a process called natural selection. Fact 2: Natural selection only selects functionally advantageous systems. Given the two facts above, what is usually chosen in evolution? | OPTIONS:
- common traits
- Plant reproduction
- advantageous systems
- undesirable traits
- Animal survival
- competition
- mysterious sytems
- Earth revolving around the sun
A: advantageous systems

Q: Fact 1: Yeast reproduce asexually by budding. Fact 2: Yeasts Yeasts are simple eukaryotes . Given the two facts above, what produces asexually by budding? | OPTIONS:
- h2o
- Most plants
- insects
- graptolites
- humans
- swamp vegetation
- simple eukaryotes
- bioaerosols
A: simple eukaryotes

Q: Fact 1: Fanning a fire increases the oxygen near the fire. Fact 2: Oxygen can be in short supply as the fire consumes it also. Given the two facts above, fanning a flame can help it do what? | OPTIONS:
- survive
- Relieve pain
- to move people
- consume air
- dissolve
- Cooking
- liquefy
- consume liquid
A: consume air