Metabolic waste. 'Metabolic wastes or excretes are substances left over from metabolic processes (such as cellular respiration), which cannot be used by the organism (they are surplus or toxic), and must therefore be excreted. This includes nitrogen compounds, water, CO2, phosphates, sulfates, etc. Animals treat these compounds as excretes.
Flan is an open pastry or sponge cake containing a sweet or savoury filling. A typical flan of this sort is round, with shortcrust pastry, usually coated with sweet syrup.It is similar to a custard tart or a South African melktert. British savoury flans may have diverged from the Spanish and French custard flans (also known as creme crÃ¨me) caramel in The Middle. ages typical flan of this sort is round, with shortcrust pastry, usually coated with sweet syrup. It is similar to a custard tart or a South African melktert.
The Latin word flado means custard.. The Middle English words flaton and flawn were based on their Latin root flado, which eventually turned into flan.. Flan was a common dish during the Middle Ages and both savory and sweet flans, such as with sugar, almonds and cinnamon, were eaten.