When a fan is moving is convection, conduction, or raditation, and WHY?

Moving of fan is convection.

The faster moving air from the fan displaces the warmer air that is in direct contact with our skin. This enhances the rate of convective heat transfer, which means we feel cooler.

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.