How do you clear a clogged drain?

To clear a clogged drain, start by using a plunger to create suction and dislodge the blockage. If that doesn't work, try pouring a mixture of baking soda and vinegar down the drain, followed by hot water after a few minutes to help break down the clog. For tougher clogs, a drain snake can be inserted to physically remove the obstruction. Always avoid using chemical drain cleaners, as they can damage pipes and are harmful to the environment.