Q: How many types of leptons are there? A:
OPTIONS:
- nine
- two
- twelve
- six

Answer: six

Question: Q: Capillaries in the chorionic villi filter fetal wastes out of the blood and return clean, oxygenated blood to the fetus through what? A:
OPTIONS:
- separates vein
- Back Vein
- skin vein
- umbilical vein
Answer: umbilical vein

input with options: Q: Water-soluble carboxylic acids ionize slightly in water to form these? A:
OPTIONS:
- solvents
- nonacidic solutions
- very acidic solutions
- moderately acidic solutions
output: moderately acidic solutions

Q: Q: What type of machines generally have lower efficiency but greater mechanical advantage? A:

OPTIONS:
- calculation machines
- simple machines
- radical machines
- compound machines

A: compound machines

input: OPTIONS:
- tropical
- oceanic
- natural
- arctic Now, answer this question: Q: What type of ecosystem do polar bears live in? A:
A:
output: arctic

Question: Q: What is required for communication? A:
OPTIONS:
- transmission and weight of signals
- weight and reception of signals
- lack and reception of signals
- transmission and reception of signals
Answer:
transmission and reception of signals