Give two exaples of how enzymes and other proteins in the process of replication

They assist in the formation and the initiation process of the cell division.
They take part in many components in cell division like the composition of the DNA and RNA.

Cell division.
Mitosis occurs more in your body since it changes, modifies and requires cell division at maximum rate in many useful situations with the stand to a particular system and organ. Mitosis and meiosis are simply cell division processes that occurs differently, they're characteristically divergent from each other according to their function and structure. Mitosis is the cell division that happens in all cells in the human body except sperm and egg cells. They produce diploid cells. Take for instance your integumentary system, layer of the skin in which your stratum basale always produces new epithelial cells (via mitosis) to take over until the outer layer, called stratum corneum (a continous replaced dead cells in this layer).

The greater the altitude the less pressure there is on gas, when there is less pressure the gas is of lower density. As you descend towards the surface of the earth, the column of air above you grows more massive and as such the pressure this column exerts on you becomes greater and of course anytime pressure increases you should expect density to do so as well.