Why would the heavier material like metals and rocks be able to stay close to the center of the rotating disk?

The answer is d the box plots show the data distributions for the number of customers who used a coupon each hour during a two-day sale. which measure of variability can be compared using the box plots? interquartile range standard deviation mean median

The biome that includes evergreen trees is the forest biome.

Effective charts and graphs include all of the following except 1. simple, meaningful, attractive design 2. accurate information 3.at least five different colors 5.clear presentation of information