Q: What organs have tiny tubes leading to and from elastic air sacs that improve airflow and oxygen uptake? A:

OPTIONS:
- ovaries
- apendix
- liver
- lungs

Answer: lungs

Problem: OPTIONS:
- hydrogen bonds
- carbon-hydrogen bonds
- hydrogen-carbon bonds
- carbon-carbon single bonds
Q: Q: What type of bonds do alkanes only contain? A:
Answer: carbon-carbon single bonds

Problem:OPTIONS:
- Gamma radiation
- Beta radiation
- Alpha radiation
- background radiation

Q: A low level of radiation occurs naturally in the environment and is called what? A:
****
A: background radiation

Q: What type of animals are known for being playful and frisky? A:
OPTIONS:
- cows
- snakes
- giant tortoises
- sea otters
sea otters

Q: What type of current carries warm air from surrounding rocks to an animal's body? A:
OPTIONS:
- electric
- ventilation
- radiation
- convection

Answer: convection

input with options: Q: What describes the way light reflects off of the surface of the mineral? A:
OPTIONS:
- intensity
- density
- hardness
- luster
output:
luster