Eutrophication is a type of pollution caused when excess nutrients, primarily nitrogen and phosphorus, enter the water. The overload of nutrients cause algae to grow uncontrollably, depleting the water of oxygen as they die.
A viroid is the smallest infectious pathogen they are made of insanely small circular RNA molecules(without any protein), they are similar to a virus but they are not the same.
Gene directs the synthesis of a cellular component through what is called gene expression.
During gene expression, information from the DNA is used to synthesis proteins, through the process of transcription followed by translation.
Transcription is the process that involves use of information carried by DNA to generate messenger RNA, in the nucleus of a cell. Then translation which uses the information carried by the mRNA to generate proteins in the organelles known as ribosomes.
