genes
Because some peoples heads are bigger than others anddd some people have different styles :)
Some dumbbells feel heavier than others because they have different weights. The weight of a dumbbell is determined by the amount of material it is made of, so a heavier dumbbell will feel heavier to lift than a lighter one.
Some weights feel heavier than others because of their mass and density. The more mass and density a weight has, the more force is required to lift it, making it feel heavier.
because there from different trees and some trees are heavier also if they are made out of metal it is the amount of metal they put in it.
thay pooped on each others heads
Some may be may be heavier and have more mass than others.
Some may be may be heavier and have more mass than others.
Years ago before soccer was invented people used to kick around peoples heads. Now instead of human heads we use a ball to kick
Some change the shaving heads every year. Others wait until they grow dull before they replace the heads.
because some objects are much denser(heavier) than water so they sink
Objects are heavier than others due to differences in their mass and density. Mass is the amount of matter in an object, while density is how compact that matter is. Objects with higher mass or higher density will be heavier than those with lower mass or lower density.
thay pooped on each others heads