Find # of electrons and draw them onto the Bohr model.
Assuming the atom has a neutral charge, the number of electrons equals the number of protons. The number of protons is given by the atomic number, 11, so there are eleven electrons.
From the inner "ring" to the outer "ring":
1. The first "ring", closest to the center of the atom, can take two electrons.
2. The second "ring", level 2, can take the next six electrons.
3. The rest of the electrons (three) can fit on the outermost ring.
A principle that is not associated with the cell theory is that very few cells reproduce. In fact all cells reproduce because they are the basic units of life.<span>2 people </span><span>found this useful</span>
The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage). The stages G1, S, and G2 make up interphase, which accounts for the span between cell divisions.
Answer:
In a community, every species interact with each other. This results in the competition among them for food and habitat. The competition is more when the resources are limited and every species compete for it. Thus the efficient species will survive and the weaker one will perish. This is known as the competitive exclusion principle.
According to this principle, two species cannot live together in the same habitat and have the same niche. Niche is the resource used by individual species and it should not be shared by many species.
If the species want to coexist in a community without any competition the niche should be different. Otherwise, it leads to evolution.
Because if resources would overlap in use, the species which less dependent on the resource will be selected for evolution. If both the species is unable to evolve and rely on the same niche, then there is rigorous competition. The species which is powerful and fit exploit the resource and this leads the other species to extinction.
This competitive exclusion principle has shown in the two paramecium species - Paramacium aurelia and Paramecium caudatum. When they are grown individually in the culture medium they thrive. But when they are grown together in the same culture medium, Paramecium aurelia extinct the Paramecium caudatum for food.
