Type Ib/c and II-L, and possibly most Type IIn, supernovae are only thought to be produced from stars having near-solar metallicity levels that result in high mass loss from massive stars, hence they are less common in older, more-distant galaxies.
The authors found that the average American woman's waist circumference has increased 2.6 (from 34.9 to 37.5) over the last 21 years, which accounts for the increase in clothing size. While 16-18 was the average size for all women, the study found that Black women in particular currently wear a size 18-20 on average.
The average height and weight of women varies around the world, but in the United States in 2010, the average adult female height was 63.8 inches...