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.
Roosevelt was against the war he wanted to stay neutral in fact he didn't stay neutral because he was supplying the Allies and the Central powers where getting mad so Germany had sent a telegram to Mexico telling them to attack the U.S and they would get back there lost territories so then the Britains got the message and sent it to the U.S and the U.S was mad at Germany so they entered the war
David Graham Phillips (1867–1911) — exposed corruption in campaign contributors and Senate
<span>Samuel Hopkins Adams (1871–1958) — exposed false claims about patent medicines </span>
<span>Jacob August Riis (1849–1914) — early pioneer in investigative journalism, exposed slum conditions</span>
B=New Kingdom, C=Old Kingdom, A=Middle Kingdom
