Food Chains and Photosynthesis

Food Chains and Photosynthesis Living things must have energy to survive. In an Hydrogen Oxygen carbon 

Autotrophs usually make more glucose than they need, so they store some for later use. Heterotrophs consume this stored glucose to support their own life processes. In the long run, it is an ecosystem s productivity that determines the types and numbers of organisms that can live there. 

Continuing toward the sea, the next region is the middle intertidal zone, the broadest and most variable. Life-forms in the middle intertidal zone are routinely covered and uncovered with water. Each time water flows out, they are exposed to hours of drying conditions caused by sunlight and wind. Although this is a tough place to live, a wide variety of organisms make their home here, and most of them are equipped with adaptations for both land and water. 

Closest to the sea is the low intertidal zone, where living things are submerged most of the time. Since these organisms are rarely exposed to drying conditions, they are completely adapted for life in the sea. Of all parts of the intertidal region, this zone has the greatest number of species. 

The most numerous organisms living on the seashore are monerans. This group consists of one-celled organisms, both autotrophs and heterotrophs that are extremely simple in structure. All of the monerans play essential roles in shoreline ecosystems. The autotrophic forms are some of the most important intertidal producers, and the heterotrophs are vital to the decomposition processes. 

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