PVC pipe can be found at most home improvement and hardware stores, such as Home Depot, Lowe's, and Ace Hardware. They're commonly available in various lengths, diameters, and thicknesses to suit different projects. For specialized needs or bulk purchases, industrial supply companies like Grainger or online marketplaces like Amazon and eBay may offer a wider range of options. Remember to consider the type and size of the PVC pipe required for your project, as there are different types intended for applications ranging from plumbing to electrical conduit. Additionally, some local plumbing supply stores or recycled construction materials outlets may have more competitive prices or unique finds.

A protein is significantly larger than an amino acid. Proteins are complex, high molecular weight molecules made up of chains of amino acids linked together by peptide bonds. A protein can consist of one or more polypeptide chains, each of which is a sequence of amino acids, and can be hundreds to thousands of amino acids long. In contrast, amino acids are the basic building blocks of proteins and are relatively small molecules. There are 20 different amino acids that can be combined in various sequences to form proteins, which perform a vast array of functions in living organisms, from catalyzing metabolic reactions to providing structural support. Thus, in terms of size and complexity, a protein, as a macromolecule, is much larger than a single amino acid.

To reclass Yarne in "Fire Emblem: Awakening," you need to use a Second Seal once he reaches level 10 in his base class (Taguel) or any advanced class level. This item allows characters to change into a different class, opening new skills and growth opportunities. Yarne's reclassing options, due to his heritage and game mechanics, include the Fighter and Barbarian classes, which can further promote to Warrior, Hero, or Berserker. The choice should depend on your strategy and the skills you wish to obtain. For example, reclassing him to a Fighter and then Hero can grant him a blend of strength and defense skills, useful for frontline combat. Always consider the balance of your team and Yarne's strengths when reclassing.