Abiotic: which are the non-living factors and chemicals in environments which can affect the ecosystem.
Answer:
"Action potential is a rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane with a characteristic pattern."
It is the mode through which a neuron transports electrical signals.
Explanation:
- Option - (a) is the best choice to choose from,
- <u>The refractory period :</u>
A second action potential cannot occur until the membrane has recovered or reestablished, this is the refractory period. The absolute refractory period coincides with inactivation of voltage-gated sodium channels which makes it impossible to generate another nerve impulse.
The student would be a primary consumer since they’re a herbivore.
Answer:
a. When a fetus is 13-15 weeks old
Explanation: is correct