True or false. if statement is false, change the word in parentheses to make it true.

(pitch) is the human perception of sound intensity.

Awalk up the phase change graph worksheet

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount