Which of the following could best be represented by a physical ...

[sarasara]

Which of the following could best be represented by a physical model?
 
  A) a cell
  B) an atom
  C) rationality
  D) ecosystem
  E) both A and B

Question 2

How is your macroscopic drawing related to what is occurring on the sub-microscopic (particulate) level? What evidence do you have to defend your statement?
 
  What will be an ideal response?

[janeli]

Answer to Question 1

A

Answer to Question 2

On the sub-microscopic level, the particles that make up the Kool-aid are coming off of the bigger chunk as the chunk fall through the water. The evidence of this is that the chunk is getting smaller and the water is taking on the color of the Kool-aid. Though we can't see the individual particles of Kool-aid, their presence is indicated by the coloring of the water. There must be incredibly tiny Kool-aid particles intermingled with the particles of water.

[sarasara]

Excellent

[Zebsrer]

Great answer, keep it coming