A flood is an overflow of water that submerges land which is usually dry. The European Union (EU) Floods Directive defines a flood as a covering by water of land not normally covered by water.
A food chain is a linear series of links starting with one specific species that eats no other species in the web, and endling with a specific species that eaten by no other species in the web.That's different from a food web. For more information, please access the related link listed below.f there are six in the food chain it will go like this: 1  The sun gives energy to the green plant (this is called the producer) ie: grass, 2  the grass is then eaten by the rabbit (which is known as a primary consumer) and then. 3  the rabbit (called the secondary consumer) is then eaten by the fox (called the carnivore).
A food chain represents a succession of organisms that eat another organism and are, in turn, eaten themselves. 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.ood 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.