Food web and tropic levels

By

you can see that all the species that are put into the food web all need to fresh water. Species such as fish and plankton usually occur small which will then be placed at the bottom of the tropic level pyramid. Unlike shark and wale u can see they can be as big as 46 feet which will then be placed at the top of the tropic levels. Sea animals can come in big or small depending on there specie but should all be protected. How do we keep them protected? Keeping the water fresh is simple by doing the littlest things. Picking up garbage, recycling are things we can do on a everyday basis to decrease the risk of species going extinct.