Explanation:
Water is the most abundant substance in the body. An average healthy adult is 45 to 75 percent water. Percent of water declines with age. Males have more body water than females.
Option C 100mv because the membrane goes from -70 mV to +30 mV. Thus, during the action potential, the inside of the cell becomes more positive than the outside of the cell.
Answer:
a.energy source ,either sunlight or chemicals
Explanation:
the animals using sunlight are known as photoautotrophs and the animals using chemicals are known as chemoautotrophs.
