Perpendicular to the isobars <span>to the right of its direction of motion in the N. Hemisphere </span> <span>to the left of its direction of motion in the N. Hemisphere </span> <span>parallel to the isobars</span>
The "Introduction" section of a research article contains the detailed background information on the topic and the problem that is being answered by the research.
Experimental design as well as materials and methods are mentioned in the "Materials and Methods" section of a research article.
