A food chain is a simple sequence of organisms in which each animal or plant is dependent on the one above or below it. Food webs are more complex than food chains in that they include all organisms that have similar feeding habits. Both food chains and food webs include animals that depend on each other for food.Know More
The food chain is rare in nature, but it is a useful concept that allows scientists to study the relationship between different plants and animals.
Food webs are organized into three categories, or trophic levels, which are the producers, consumers and decomposers. Producers make their own food and are called self-feeders. For instance, green plants are producers, making their own food using sunlight in a process called photosynthesis.
Consumers cannot make their own food and have to eat other organisms to get the nutrients they need. Consumers can be divided into three groups. Herbivores are the plant-eating animals and carnivores are the meat-eating animals. A third group called omnivores eats both plants and animals.
Consumers are also classified as primary, secondary and tertiary. The herbivores are the primary consumers. Animals that eat the primary consumers are called secondary consumers. The third order, or tertiary consumers, eat the secondary consumers.Learn more about Food Facts
According to Nature.com, the golden eagle is at the top of the food chain, above plants, squirrels and scorpions. Plants are considered primary producers and make up the first level of the food chain. Ground squirrels, which are primary consumers, are in the second level and feed on plants. Golden eagles are tertiary consumers, meaning that they prey upon primary and secondary consumers.Full Answer >
Seahorses occupy a middle position in their food chain. They are carnivores that feed on tiny crustaceans, such as shrimp. The shrimp feed on algae, which are near the base of the food chain. Seahorses are preyed upon by crabs and fish, which are eaten by larger fish. These large fish are hunted by apex predators, including sharks that are at the top of the food chain.Full Answer >
A food web is a diagram showing which animals eat which other animals in a given ecological community. It also aims to show the transfer or flow of energy and materials, such as sunlight or carbon, that occurs between species via their feeding relationships.Full Answer >
As of 2013, Subway is the largest fast food chain in the world; the Connecticut-based sandwich chain opened its 40,000th restaurant in August, 2013. At that time, Subway's chief development officer announced plans to add an additional 10,000 outposts to its roster of restaurants worldwide.Full Answer >