When referring to a megabyte for disk storage, the hard drive manufacturers use the standard that a megabyte is 1,000,000 bytes. This means that when you buy a 250 Gigabyte Hard drive you will get a total of 250,000,000,000 bytes of available storage.
A food chain only follows just one path as animals find food. eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. A food web shows the many different paths plants and animals are connected. eg: A hawk might also eat a mouse, a squirrel, a frog or some other animal.
Food Chains: A food chain is line of specific organisms eating each other. Example: grass eaten by grasshopper, grasshopper eaten by rat, rat eaten by snake, snake eaten by hawk.Food Web:multiple food chains in a web form.Example:leaf eaten by squirrel, fish eaten by seal and eats seaweed,cow eaten by lion and eats grass,snake eaten by hawk and eats rabbit,grasshopper eaten by frog and eats grass.