input with options: Q: Lipids are organic compounds that consist of carbon, hydrogen, and? A:
OPTIONS:
- nitrogen
- methane
- helium
- oxygen
output: oxygen

Q: Q: Differences in density between water and air lead to differences in what? A:

OPTIONS:
- resistance
- sound
- energy
- pressure

A: pressure

input: OPTIONS:
- covalent bonds
- soluble bonds
- magnetic bonds
- ionic bonds Now, answer this question: Q: What kind of bonds, where electrons are transferred rather than shared, are considered the ultimate in polarity? A:
A:
output: ionic bonds

Q: What is the largest artery in the body called? A:

OPTIONS:
- ventricular
- carotid
- radial
- aorta

Answer: aorta

Problem: OPTIONS:
- succinct
- inherited
- occuring
- extinct
Q: Q: Species of organisms that have permanently died out can also be called what? A:
Answer: extinct

Q: Ciliary muscles control the shape of the lens, which bends light and focuses it on what? A:

OPTIONS:
- the pupil
- the vitreous fluid
- the cornea
- the retina

Answer:
the retina