A lot of "full length" videos are padded for monetisation purposes. I hate watching some tubers going on and on before actually getting into the main topic.
Because acid in your breakfast can damage your the enamel of your teeth when you brush. (I'm not a dentist but that's what I found from most health-related websites.)
East Asia is one of the most genetically diverse regions in the world, and the three major ethnic groups of East Asia, Han Chinese, Japanese and Korean, have distinct genetic makeup and ancestry. They also have different facial features, such as eye shape, nose shape, skin tone, and hair texture, that reflect their genetic variation and environmental adaptation.
According to a recent study based on whole-genome sequence data, Han Chinese, Japanese and Korean populations have diverged from each other about 3000 to 3600 years ago, and have experienced substantial admixture with surrounding populations since then. Another study based on population genomics revealed that East Asian populations have different ancestral origins, population relationships, genetic differentiation, and admixture patterns.
Most users spend the majority of time reading instead of posting. It makes sense to have prominent buttons for most frequently used controls.