Some are secondary consumers or second-order consumers, meaning that they eat primary consumers. Snakes that eat mice (primary consumers) are secondary consumers. Other higher-level consumers are tertiary consumers or third-order consumers, and eat further up on the food web or perhaps on many levels.Examples of third-order consumers are mountain lions and hawks, both of whom eat second-order consumers such as snakes and owls. food web differs from a food chain in that it includes all the organisms whose feeding habits are related in some way or another to those of other organisms. In the example above, small animals other than rabbits feed on lettuce and carrots and, in turn, those animals are fed upon by a variety of larger animals.
There are no quotas for persons into the U.S. seeking citizenship. The quotas are for Visas...in particular, Work visas AND Immigratn Visas. The status of legal permenent residence in the U.S. is a VISA class. Most people do not know this.
Those born in the United States or have had parents who were United States citizens at the time of their birth are considered US citizens themselves. Anyone who is interested in becoming a citizen after they are born can apply for naturalization through the US Citizenship and Immigration Services (USCIS). This can be a lengthy process and there are many exceptions to the rules. Application. You must be eligible to apply for US Citizenship.