Monday, December 6, 2010
The Pond, by Mariam
Both the secondary and tertiary consumers are known as heterotrophs as they do not produce their own food. This food pyramid shows examples of predation as the respective organisms are killing and consuming the organisms in the trophic levels below them. In contrast parasitism does not kill either of the organisms, for example a mosquito (parasite) bites a passerby (host), the mosquito benefits from receiving blood for nourishment and the human suffers from pain and blood loss. In addition we found that the PH of the water was 6.5, indicating a slightly acidic but nearly neutral level – these conditions are hospitable to many life forms and therefore support a wide biodiversity within the pond and with that a greater multitude of organisms. Oh the mysteries of ecology.