Struggle for existence
scientific for evolution
competition
Since food and other resources are limited, the members of a species must compete with each other to survive. Competition does not always involve direct physical fights between members of a species. Instead, competition is usually indirect.
It means that members of each species compete regularly to obtain food, living space, and other necessities of life.(Found this information in my Biology Textbook pg.380)This phrase means that life is hard. Life is not going well. You are struggling to survive.Ex: no money, no house, or no food
Food, water, space, etc.
Competition: intraspecifically (between members of the same species) or interspecifically (between members of different species).
they compete for food,mates,and places to put there baby's
Such situations result in comoetion and struggle for existance .
The Countries that are members of the Commonwealth of Nations can compete in the Commonwealth Games.
Usually animals of the same species compete for mates { two males usually compete over one female.} Animals could compete over prey or vegetation too.
Food, water, space, etc.
competition would be the first thing. Then as the limited resource diminishes members of the species would die or migrate to a new location, but if they all stayed there the species would eventually go extinct.