Because he was assassinated by Serbian rebels. Most of Europe was allied with someone, a tangle of alliances. Serbia was allied Russia. Austria-Hungary didn't like Serbia. Well when the Archduke decided to visit Sarajevo, he was assassinated by a Serbian assassin. Because of that, Austria-Hungary wanted to punish Serbia and declared war. Well Austria-Hungary was allied with Germany and Italy. And Serbia was allied with Russia. Well Russia attacked Austria-Hungary and Russia was allied with both Great Britain and France.... So it triggered a chain reaction like that.
Answer:
Carrying capacity
Explanation:
Carrying capacity is the quality of the average density of the population at which its number starts to decrease. The carrying capacity is different for each of the species.
So that in some areas it arises or declines from its carrying capacity. It declines from year to year and it can be a decline or arise day by day. There are variations in the seasons. Drought is a different cause of the decrease in the available vegetation.
