Answer:
The two factors are:
• The kind/type of surface involved.
• The force that the surface are being pushed together.
Explanation:
Friction can be said to be the general term used to describe the force that one surface exert on another when they rub against each other.
When the surface is partially not smooth or totally rough, a greater force is been needed to move one surface past the other.
The weight of the can also significantly be a key factor. This is where the need to friction reduction come to play a role; and need for friction reducers like lubricant, rollers etc helps.
Biology is the study of life so a Biologist would study biology: the study of life and living things.
It would eventually lead to overpopulation
Answer: (Smallest = left) (Largest = right)
Individual = community = population = biome = biosphere = ecosystem
