The number of steps an organism is from the start of the chain is a measure of its trophic level. Food chains start at trophic level 1 with primary producers such as plants, move to herbivores at level 2, predators at level 3 and typically finish with carnivores or apex predators at level 4 or 5.The path along the chain can form either a one-way flow or a food web.he trophic level of an organism is the position it occupies in a food chain.
When you're at home, an IP address is assigned to your computer by your Internet service provider (think Time Warner Cable, Cox Communications, or AT&T). Since they are the ones giving you access to the Internet, it's their role to assign an IP address to your computer.
This is called your computer's IP address. (IP stands for Internet protocol.) For most users accessing the Internet from a dial-up Internet service provider (ISP), the IP address will be different every time you log on. Yahoo generally receives IP addresses from all users of all services.