That is called, circular. Hope this helps!
Answer:
Gasoline is a complex mixture of many organic compounds, with various additives that provide for a suitable automobile fuel. It is produced through refining operations from crude oil, which is a natural blend of many different hydrocarbons found in underground reservoirs in certain parts of the world.
Specialised cells - tissue - organs - organ systems/organisms
B. The brain reacts to excessive dopamine levels by increasing the number of dopamine receptors.
