These changes may be affected by genetic, chemical, and physical factors.

There are a number of reasons for this including social, psychological and physical factors.

Model inputs include a variety of physical, cultural, and economic factors.

It is your body's reaction to a complex interaction of both emotional and physical factors.

Frequently patterns in nature are assumed to be produced by physical factors alone.

As people age, changing physical factors can affect nutrient needs.

Some physical factors cannot be altered in a ridiculous way however.

It is your body's reaction to a combination of emotional and physical factors.

Two other physical factors tend to limit the city's population.

There are a number of physical factors as well.