<span>Since you left off the choices, I have to just present the facts of what occurs first in the nerve impusle. The first thing that will is happen is the sodium ios will move to the inside of the nueron. The second step is the potassium ions will move to the inside of the neuron. After those move into the nueron, calcium will then move into the nueron. Both the sodium and potassium have 1 postive charge. While the calcium ion has 2 positive charges. </span>
The human populations are not limited by the carrying capacity of their ecosystems, and they are the only species on Earth that are able to perform such a thing. The main reason for this is that the humans are able to transport resources of all sorts and for all needs from very distant places. Even if there's a very large population surrounded by desert, the humans are still able to survive by simply bringing in the necessary things from other places throughout he means of transportation. Another reason is that the humans are able to change and manipulate their environment to certain extent, being able to provide for themselves even in ecosystems that naturally are nowhere near close to provide those things for them.
Answer:
Out crossing
Explanation:
By breeding a certain breed of chicken with a different kind of chicken may produce different sized eggs and avoid the possibility of inbreeding depression
Yes, they do:
In an F1 generation (first generation to be studied) all offspring will appear with dominant traits.
In an F2 generation (second generation to be studied) there is only a 25% chance of offpring having recessive traits (75% chance of dominant traits).
Hope it helped,
BioTeacher101
