1. Predation (where one organism kills and eats another organism; predator and prey)
2. Competition (where species compete for a particular resource, even without coming in contact with each other)
3. Paratism (where a parasite is on an animal; harms it and feeds on it without killing them instantly)
4. Mutualism (both species benefit from each other)
5. Commensalism (one organism benefits, but the other one is neither helped nor harmed)
<span> (1) gene frequencies may be changed by migration, gene flow from another population. (2) in small populations, gene frequencies can be changed via random sampling -- this is known as genetic drift. (3) mutation pressure and (4) non-Mendelian segregation (meiotic drive) may also change gene pools. However, by far the most important agent of evolution is (5) natural selection, which operates by </span>differential reproductive success<span> of individuals.
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<h2><u>Answer:</u></h2>
The correct option is B (The longer-spined sea urchins existed before the shorter-spined sea urchins.)
<h3><u>Explanation:</u></h3>
The more drawn out spined ocean urchins existed before the shorter-spined ocean urchins.
Since the shorter spined urchins are higher up, that demonstrates that they developed from the more drawn out spined urchins, implying that having the shorter spines was useful to them as an animal types, so the shorter spines came AFTER the more extended spines.
Answer:
D).Both organisms have different ways of forming their lungs
The nurse should caution the child to avoid extreme physical activities for this could harm the child's health because JIA does not require children to be involved with strenuous activities but they should only do activities that are recommended by their doctors to avoid further complications.
