Organisms within an ecosystem are organised into levels. Producer Producers are plants and algae, which photosynthesise. Primary consumer Primary consumers are herbivores, which eat producers ...

These can be replaced by natural fertilisers such as manure or by NPK fertilisers containing nitrogen, phosphorous and potassium.

Their work reveals a mechanism of interdependence of different forms ... of Molecular and Cellular Biology at the UNIGE Faculty of Science, is interested in how tight junctions interact with ...