Feven's Land Ecologies

Land ecosystems depends upon each species of animal to live. On the one hand, carnivores consume herbivores while herbivores devour plants. If the predator consumes too many prey, the scarcity of the prey reduces the predator. Homeostasis is maintained. At any one time, some of the population is being reduced while some other part is increasing. The limits are set by the numbers of prey available as well as how easy they are to consume. When two consumers compete for the one prey, they also keep each others growth in check. Usually the weaker of the species becomes prey because they lack the natural defenses of the stronger members. This mutually dependent relationship maintains species population.

On the top of the food chain are plants. Plants have the ability to convert energy from the sun directly into sugars. Carbon dioxide (Co) and water(H20) are combined and sugars and oxygen are produced by photosynthesis.

If you are interested in photosynthesis, here is a formula. If not skip to the next paragraph.

The Chemical Equation for Photosynthesis in Green Plants:

light 6CO2 + 12H2O ===> C6H12O6 + 6O2 + 6H2O

These sugars represent stored energy and all living organisms need energy. It may be stored in the roots as fruit, in the leaves, or in the stem. As we funnel down the pecking order, fewer organisms eat other . In the big scheme of things, plants produce energy that animals must have to live. Animals that eat only the plants are called herbivores. Animals who eat other animals as well as plants are called carnivores.

Plants must compete with other plants for the same space. If there are two plants, they may grow together and form a hybrid plant that is better able to adapt. In this way, the gene pool, even among plants, grows.

Living Organisms

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