Yes, fish contain amino acids, which are the building blocks of proteins. Proteins play a crucial role in the biological functions of all living organisms, including fish. Fish protein is highly valued for its high-quality, easily digestible amino acid profile, making it a prime source of nutrition for humans. It contains essential amino acids, which are those the human body cannot synthesize on its own and must obtain through diet. The amino acid composition can vary among different types of fish but generally includes lysine, methionine, threonine, and tryptophan among others. Incorporating fish into one's diet can contribute significantly to meeting the body's amino acid and overall protein needs, supporting muscle growth, repair, and overall health.

The chemical formula of Iron(III) oxide is Fe2O3. This compound is one of the main oxides of iron and is commonly known as rust when hydrated. Iron(III) oxide results from the oxidation of iron, particularly in the presence of oxygen and water, which commonly occurs in nature, leading to the corrosion of iron-based materials. Fe2O3 has several polymorphs but the most stable and common form is hematite, which is a major ore of iron and serves as an essential resource for iron and steel production. It is also used as a pigment, in the form of red ochre, and has applications in thermalite for its thermite properties due to its ability to produce high temperatures when reacted with aluminum powder. Additionally, because of its magnetic properties, it finds uses in magnetic storage media and ferrites for electronic devices.

Titanium is renowned for its high strength-to-weight ratio, being one of the strongest metals on the Earth while still being lighter than steel. Its ultimate tensile strength can range from 434 MegaPascals (MPa) to over 1400 MPa depending on the alloy, composition, and processing. This makes it an excellent material for aerospace, medical implants, and high-performance automotive applications. Despite its strength, titanium is also highly resistant to corrosion from seawater, chlorine, and some acids, enhancing its durability and longevity in challenging environments. However, it's worth noting that its strength, while impressive, is complemented by its high cost and difficulty in working and welding it compared to other metals, factors that can limit its use in broader applications.