A line of indirect evidence of competition comes from the comparison between closely related species, whose population can be allopatric (geographically separated) or sympatric (geographically superimposed). In some cases, the allopatric populations of these species are morphologically similar and use similar resources. On the other hand, sympatric population, which are supposed to compete for resources, have body structures and use different resources. The displacement of characters is the tendency to have more divergent characteristics in sympatric populations of two species than in allopatric populations of the same two species.
An example of character displacement is the variation in size between populations of galapagos finches. Some of its populations are allopatric ( they live separately) and others are sympatric ( they live together). Peak size distributions they vary according to whether they are sympatric or allopatric. They look more alike when they are allopathic than when they are sympatric. That is, the peak size character moves when species enter competition.
There aren't any statements to judge from.
<span>Mangrove forests cannot
withstand freezing temperature that is why they can only grow at tropical and
subtropical latitudes whereas salt marshes grow in middle to high latitudes. Mangrove
forests can be recognized by their tangle of roots that allow them to stand
still on stilts above water. The roots of the mangrove trees slow the movement
of tidal waters causing the sediments to settle out of water and build up the muddy
bottom. For salt marshes, they are coastal wetlands that are flooded and
drained by salt water brought by tidal waves. The difference between the two is
that mangrove forests are woodlands and salt marshes are coastal wetlands. </span>
