Answer:
The correct answer is B. Conic projections.
Explanation:
A conic projection is a type of map projection. In conical projections, the image is built on the lateral surface of a cone that intersects the globe in two parallels or is tangent to it. The top of the cone lies on the continuation of the Earth's axis. In this way, the Earth is shown in half, starting from a central point that happens to be the North Pole or the South Pole.
The purpose of this type of map is to faithfully show the geographical distribution of the polar areas of the planet, which in other projections are deformed to a greater or lesser extent as a result of the elliptical shape of the polar regions.
Answer:
B) action potential
Explanation:
The ions continuously flow across the cell membrane in the cells which establishes a membrane potential across the membrane. The cell membrane tries to maintain the negative potential between -40 to -90 mV.
At rest the neuron cell maintains the membrane potential around -70mV and this potential are known as the resting potential.
When the positive ions especially sodium ions enter the neuron then the positive charges get accumulated inside the cell. This changes the potential to a more positive value and when it crosses the threshold of -55mV then an action potential is formed.
In the given question, if the membrane potential changes from –70 to +50mV then an action potential will be generated in the neuron cell.
Thus, B) action potential is the correct answer.
<span>When was the first regular stagecoach lines established between Missouri and California?
1756</span>
