Good question. To avoid the question: the ideal solution is to integrate multiple answers into one answer. Instead of having multiple answers from multiple people, the beauty of a wiki like FAQ Farm is that over time you can collaborate on one good answer that includes information and opinions from different people. Of course, integrating into one answer is easier said than done. When you don't have time to do it, or what you add represents a completely different opinion and you think it really needs to be set apart, it is perfectly appropriate to put it under a different headline. We don't have a policy on whether it's better to put new answers first or last. Like just about everything here: use your good judgment about what will make the most sense to the person looking for the information. You might also consider converting answers into a list of opinions, like this: Here are different opinions and pieces of advice offered by other contributors:
There is no upper limit.
Clay and loam are both commonly placed on the bottom of ponds.
Actinides
fardagewood placed in bottom of ship to keep cargo dry
because i am a disco dancer
drainage
To make hydro-electric energy.
The mattress pad is meant to be placed on top of the mattress and directly under the bottom sheet.
The f-block elements are placed at the bottom of the periodic table because if they were placed where they belong the periodic table would be too big to fit on a normal sheet of paper.
A reference placed at the bottom of a page is called a footer. It typically includes information such as page numbers, copyright details, or additional notes relevant to the content on that page. Footers help provide context and attribution for the information presented on the page.
The Untouchables are slaves therfore they're at the bottom of the pyramid.
I think you mean OCTAHEDRON. An Octahedron is an 8-sided solid object. It is like two pyramids placed bottom to bottom.