The answer is graded potential<span>. Its made of various action potentials that depolarise the neuron incrementaly, in short interspersed intervals that do not give time for the neurons to return to resting potential. Therefore, the actions potentials, of varying sizes, grade up in sum and when they cumulatively reach the threshold level, they invoke an impulse in the nerve</span>
Answer:
The first and 2nd pictures basically capture what they look like.
<span>1) Malthus</span> Hutton influenced darwins idea
4) <span>4. Darwin concluded that if humans could influence an offspring's traits, so could nature.</span>
<span>new scientific investigations lead to new theories</span>