Problem:OPTIONS:
- physical balance
- vacuum balance
- nucleic balance
- osmotic balance

Q: The body does not exist in isolation. there is a constant input of water and electrolytes into the system. while osmoregulation is achieved across membranes within the body, excess electrolytes and wastes are transported to the kidneys and excreted, helping to maintain this? A:
****
A: osmotic balance

Q: What makes the earth habitable for humans? A:
OPTIONS:
- carbonate of water
- aridity of water
- availability of water
- abundance of water
abundance of water

Q: What do increasing greenhouse gas concentrations in the air do to the earth's temperature? A:
OPTIONS:
- Lower it
- stable it
- Pollute
- raise it

Answer: raise it

Question: Q: What technique is used by insects and birds to find food, mates, and safety from predators? A:
OPTIONS:
- playing
- sleeping
- mating
- flying
Answer: flying

input with options: Q: What is responsible for many properties of covalent compounds, which have relatively low boiling points, cannot conduct electricity, and may not dissolve in water? A:
OPTIONS:
- ionic charge
- accretion bonds
- atomic weight
- covalent bonds
output: covalent bonds

Problem: OPTIONS:
- movement and light
- light and sound
- heat and movement
- heat and light
Q: Q: Chemical reactions always involve energy. when methane burns, for example, it releases energy in the form of what? A:
Answer:
heat and light