Respuesta :
The study of chemicals and bonds is called chemistry. There are two types of elements and these are metals and nonmetals.
The correct answer is convection.
What is convection?
- Convection is the single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity.
According to the question, convection is a suitable answer the question.
For more information about the convection, refer to the link:-
https://brainly.in/question/9531558