Q: Which of these is last if ordered in increasing size: galaxy, solar system, star cluster? A:

OPTIONS:
- none of these
- solar system
- star cluster
- galaxy

Answer: galaxy

Problem: OPTIONS:
- spheres
- rectangles
- triangles
- squares
Q: Q: In a pedigree what shape symbolizes males? A:
Answer: squares

Problem:OPTIONS:
- Amniotic fluid
- blood stream
- Cerebrospinal fluid
- interstitial fluid

Q: Where are all hormones secreted into before entering the circulatory system? A:
****
A: interstitial fluid

Q: Motion of water molecules helps break up interactions between what? A:
OPTIONS:
- ions or hormones
- acids and bases
- enzymes and acids
- solid ions or molecules
solid ions or molecules

Q: What play an important role in the modulation of the nuclear chain reaction? A:
OPTIONS:
- radiation rods
- control neutrons
- particle rods
- control rods

Answer: control rods

input with options: Q: What causes rivers to always flow downhill? A:
OPTIONS:
- slope
- pressure
- diffusion
- gravity
output:
gravity