The duplication of centrioles occurs at the same time as DNA duplication for the cell cycle; that is, in the S phase of interphase.
Allows the transformation of matter to different forms enabling the utilisation of that element in different organisms.
Answer: This is the long-term carbon cycle. So, carbon takes up various forms: glucose in plants, carbon dioxide in the air and hydrocarbons like coal.
There are often not more than one or two independent variables tested in an experiment, otherwise it is difficult to determine the influence of each upon the final results. There may be several dependent variables, because manipulating the independent variable can influence many different things.
The strongest acid in the simulation is battery acid
