During the combustion of iron wool and charcoal, both substances undergo a chemical reaction with oxygen in the air. Iron wool reacts with oxygen to form iron oxide, releasing heat and light in the process. This is a combustion reaction, and the iron wool undergoes oxidation. Charcoal also undergoes combustion, reacting with oxygen to produce carbon dioxide, water vapor, and heat. Both reactions release energy in the form of heat and light, making them exothermic reactions. **

The savings bank may be blocking online banking customers for security reasons. They may have detected suspicious activity on certain accounts and are taking precautionary measures to protect their customers' funds and personal information. Additionally, the bank may be conducting routine maintenance or updates to their online banking system, temporarily restricting access to ensure a smooth and secure user experience once the maintenance is complete. It is also possible that there may be technical issues or glitches with the online banking platform that need to be resolved before customers can access their accounts again. **

Washable refers to an item that can be cleaned by washing, typically with water and detergent. This term is often used to describe fabrics, clothing, and other household items that are designed to withstand being washed without being damaged. Washable items are convenient and practical, as they can be easily maintained and kept clean for repeated use. **

Savings bank transactions can typically be deleted by accessing the account statement or transaction history on the bank's online portal or mobile app. From there, you can select the specific transaction you wish to delete and look for an option to remove or delete it. If you are unable to delete the transaction yourself, you can contact your bank's customer service for assistance in removing the transaction from your account history. It's important to note that some transactions may not be able to be deleted, especially if they are already processed or finalized. **

Activated charcoal is the best filter among the three options. It has a larger surface area and more porous structure, allowing it to effectively trap and remove impurities from air and water. Ash and regular charcoal may also have some filtering properties, but they are not as effective as activated charcoal. Therefore, when it comes to filtering, activated charcoal is the superior choice. **

Charcoal is typically produced by burning wood in a low-oxygen environment, a process known as pyrolysis. This can be done on a small scale by individuals for personal use or on a larger scale by commercial operations. Charcoal is also produced as a byproduct of other industries, such as the production of steel or sugar. **

Charcoal itself is not inherently dangerous, but it can pose risks if not used properly. When burned, charcoal produces carbon monoxide, a colorless, odorless gas that can be harmful or even deadly if inhaled in high concentrations. Therefore, it is important to always use charcoal in a well-ventilated area to prevent the buildup of carbon monoxide. Additionally, ingesting charcoal can be dangerous and should be avoided. Overall, when used safely and responsibly, charcoal can be a useful and effective fuel source for cooking and heating. **

Yes, Garnier Movida is a washable hair color. It is a semi-permanent hair dye that gradually fades with each wash, typically lasting around 6-8 weeks. This makes it a great option for those looking for a temporary hair color change without the commitment of a permanent dye. **