The main reason to use a visual aid in a presentation is to ensure concepts are more challenging to understand.
make a challenging concept easier to understand.
guarantee that complex information is accurate.
keep an audience’s attention through distraction.

In all living cells dna controls cellular activities by

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

State the effect on the concentration of the clo- ion when there is a decrease in the concentration of the oh- ion