Q: Q: What are the organs work together to allow us to see? A:

OPTIONS:
- lungs
- heart
- nose
- brain and eyes

A: brain and eyes

input: OPTIONS:
- mobility cells
- molecules
- skin cells
- nerve cells Now, answer this question: Q: When orders are sent from your brain to your legs, these signals pass through what type of cells? A:
A:
output: nerve cells

Q: What term means anything that is detected either through human senses or with instruments and measuring devices that extend human senses? A:

OPTIONS:
- variation
- evaluation
- evacuation
- observation

Answer: observation

Problem: OPTIONS:
- acidic neutrons
- acidic electrons
- acidic proteins
- acidic protons
Q: Q: When dissolved in water, what do strong acids transfer to the solvent completely? A:
Answer: acidic protons

Problem:OPTIONS:
- third
- none of the above
- first
- second

Q: Which of newton's law shows that there is a direct relationship between force and acceleration? A:
****
A: second

Problem:OPTIONS:
- viscosity
- homeostasis
- friction
- elasticity

Q: What property means that something can return to its original shape after being stretched or compressed? A:
****
A:
elasticity