Classes of compounds are groups of chemical substances that have similar structures and properties. They are typically categorized based on the types of atoms and bonds present in their molecular structures. Functional groups, on the other hand, are specific groups of atoms within a molecule that are responsible for the molecule's characteristic chemical reactions and properties. They are the reactive centers of organic compounds and are responsible for the compound's behavior in chemical reactions. Examples of functional groups include hydroxyl (-OH), carbonyl (C=O), and amino (-NH2) groups. **

There are no longer classes on modern ships because the concept of class divisions has become outdated and is no longer considered acceptable in today's society. The focus now is on creating a more inclusive and equal experience for all passengers on board. Additionally, modern ships are designed to offer a wide range of amenities and services to all passengers, regardless of their ticket type, making the traditional class system unnecessary. This shift towards a more egalitarian approach reflects the changing attitudes towards social equality and inclusivity in the travel industry. **

The graduating classes are typically the final year of high school or college, such as the 12th grade in high school or the senior year in college. These classes are considered the graduating classes because students in these grades are completing their final year of study and are preparing to graduate and move on to the next stage of their education or career. **

Contemporary plays can be considered modern in the sense that they reflect current societal issues, values, and cultural norms. They often incorporate modern technology, language, and themes that are relevant to today's audience. However, the term "modern" can also refer to a specific historical period in theater, typically the late 19th and early 20th centuries, so in that sense, contemporary plays may not be considered modern. Overall, the classification of contemporary plays as modern depends on the context and definition being used. **

The answer to whether online classes or in-person classes are better depends on individual preferences and circumstances. Online classes offer flexibility and convenience, allowing students to learn from anywhere and at their own pace. In-person classes, on the other hand, provide more opportunities for face-to-face interaction with instructors and classmates, which can enhance learning and communication skills. Ultimately, the best option will vary for each student based on their learning style, schedule, and personal preferences. **

Graduating classes at the gymnasium typically belong to the upper secondary level of education. In many countries, this corresponds to the 11th or 12th grade, depending on the specific education system. These classes are the final years of compulsory education before students move on to higher education or enter the workforce. Graduating classes at the gymnasium are often focused on preparing students for university entrance exams and providing a well-rounded education in various subjects. **

Some popular MMOs that offer classes like Summoner, Necromancer, and Pet classes include World of Warcraft, Final Fantasy XIV, and Guild Wars 2. In World of Warcraft, players can choose the Warlock class which specializes in summoning demons and pets to aid them in battle. Final Fantasy XIV offers the Summoner class which can summon powerful creatures to fight alongside them. Guild Wars 2 features the Necromancer class which focuses on dark magic and summoning minions to assist in combat. **

I prefer regular classes in school because I believe in-person interaction with teachers and classmates is important for effective learning. Being in a physical classroom allows for better engagement, communication, and collaboration. Additionally, I find it easier to focus and stay motivated in a traditional classroom setting compared to online classes. **