Which of the following systems are involved in the declining ability to balance with aging? Select all that apply.

Girls begin their adolescent growth spurt approximately 2 years before boys begin their adolescent growth spurt, on the average.

The ability to see an object of interest as distinct from the background is termed ____________.

During the first year, which type of reach is most prevalent?

Tool use depends on the properties of both the tool and the surface or other object the tool is used on.

The actions and behaviors permitted by the places, objects, and events in and of an environment are termed ____________.

Traction epiphyses are located where ____________ attach to the bones.

Infants who are able to detour around a barrier demonstrate spatial perception, and development of spatial perception is facilitated by locomotor experience.

In the development of throwing, trunk rotation in which the lower trunk and upper trunk rotate together, as a unit, is called ____________ rotation.

Infants transition from prereaching to reaching at what age?