The size of a shadow depends on the angle and distance if the light source and the size and shape of the object making the shadow. They can be the same size.
There are so many different sizes there really is no average. Sizes are changing all the time.
Because animals are all different shapes and sizes
they are all different sizes
Because we are all different.
Erosion creates all sorts of different shapes in sandstone.
Yes, since people come in all different sizes, so do bones.
They do it all the time. But careful they are not of very different sizes. Really huge pups can kill a small female.
Gravity has an effect on all objects, including objects of different shapes and sizes.
because of different file sizes.
"Yes, plastic bag sealers come in different sizes. I found all different shapes and sizes including: 12"" wide, 16"" wide and 24"" wide sizes."
For the same reason that humans come in different colors, shapes, and sizes. All birds are unique.
They are all different sizes.