Why do food webs require a continual input of energy from the Sun?
1 Answer
The sun's energy is the source of most of the energy found in a food web.
Explanation:
A food web is basically an energy flow diagram. The food web shows how energy is transferred from one organism to another in the environment.
Most of the energy is a food web comes from producers. The producers get their energy from the sun. This energy is passed on to the herbivores that in turn pass the energy on to the carnivores.
At each level 90% of the energy is used up or lost. Only 10% roughly is passed up the food web.
Without a constant renewal of the energy in the producers from the sun the food web would rapidly run out of energy.
Think of an arctic forest in the winter. There is little sunlight so there is little energy produced by the plants. Food becomes difficult to find and the winter is a difficult time for the animals.
