Answer:
Explanation: I did this one in school yesterday it was D
Answer:
how much per cent above the cost price should a shopkeeper mark his goods so that after allowing a discount of 25% on the marked price he gains 20% ?
Two substances in the body that will move based on the principle of diffusion are CARBON DIOXIDE AND OXYGEN.
Diffusion is the process by which molecules of a substance move from the region of higher concentration to the region of lower concentration. Carbon dioxide and oxygen can easily move in an out of the cell via diffusion.<span />
Answer:
Depolarization.
Explanation:
The electric membrane potential or cell potential may be defined as the difference in electric potential inside and outside of the cell. The membrane potential is important for the generation of action potential.
The opening of sodium channels in the membrane neuron causes the influx of sodium ions in the cells. This changes the membrane potential towards more positive and the cells depolarize.
Thus, the correct answer is option (A).