Need refers to a basic requirement for survival or well-being, such as food, shelter, or clothing. Demand, on the other hand, is the desire for a particular product or service backed by the ability and willingness to pay for it. Necessity is something that is indispensable or essential for a particular purpose or situation. In summary, need is a fundamental requirement, demand is the desire for a product or service, and necessity is something that is crucial or essential. **

While relationships can provide many benefits such as emotional support, companionship, and personal growth, they are not a social necessity. Some individuals may choose to prioritize other aspects of their lives such as career, personal development, or friendships over romantic relationships. Ultimately, the importance of relationships varies from person to person, and what matters most is finding a balance that aligns with one's values and priorities. **

Strict universality refers to a statement that is true in all possible worlds, meaning it holds true in every conceivable scenario. Necessity, on the other hand, refers to a statement that is true in all possible worlds and cannot be false in any conceivable scenario. In other words, while strict universality applies to all possible worlds, necessity goes a step further by asserting that the statement cannot be false under any circumstances. Therefore, necessity implies strict universality, but strict universality does not necessarily imply necessity. **

It is not clear from the information provided whether the tomcat was neutered without necessity. Neutering is often recommended for pet cats to prevent overpopulation and reduce certain health risks, so it is possible that the neutering was done for a valid reason. However, if the neutering was done without a clear medical or behavioral necessity, it could be considered unnecessary. Without more information, it is difficult to determine the specific circumstances surrounding the tomcat's neutering. **

Pricing is determined based on supply and demand through the interaction of buyers and sellers in the market. When the demand for a product or service increases and the supply remains constant, the price tends to rise as buyers are willing to pay more to secure the limited supply. Conversely, when the supply of a product or service increases and the demand remains constant, the price tends to decrease as sellers compete to attract buyers. Ultimately, the equilibrium price is reached where the quantity demanded equals the quantity supplied, and this is where the market price is determined. **

The phrase "Necessity knows no law" suggests that when faced with a situation where something is necessary or essential, people may feel justified in breaking rules or laws in order to fulfill that necessity. It implies that in times of extreme need or urgency, individuals may prioritize their immediate needs over following established laws or norms. This phrase highlights the idea that necessity can sometimes override moral or legal constraints. **

Strict universality refers to a statement that is true in all possible worlds, while necessity refers to a statement that is true in all possible worlds by virtue of its logical structure. In other words, strict universality is a broader concept that encompasses all possible worlds, while necessity specifically refers to the logical necessity of a statement. Strict universality is a more general concept, while necessity is a more specific and stringent requirement for a statement to be true in all possible worlds. **

Time zones are necessary to create a standardized way of measuring time across different regions of the world. They help to coordinate activities, such as travel and communication, by ensuring that everyone is on the same schedule. Without time zones, it would be difficult to accurately schedule events or coordinate activities across different regions that experience daylight and darkness at different times. Time zones also help to prevent confusion and ensure that people can effectively plan their daily activities. **