Draw a flowchart that explains how Tom's nervous system controls his actions. As part of the flowchart, write one or two sentences describing how the nervous system is involved in each of these steps: 1. Tom steps into the haunted house.
2. Tom feel his heart pumping and his breathing speed up.
3. Tom jumps when he sees the costumed character.
4. Tom runs out of the haunted house

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?