A characteristic of children in cross-race friendships is that they ______.

Which stage of Piaget’s perspective involves children seeing a need for agreement on rules and consequences for violations?

Under quiet conditions, blood returning to the heart retains about ________ of its oxygen content.

How language is used in everyday contexts describes ______.

Internal respiration refers to exchange of oxygen and carbon dioxide between the blood and the

Moving air to and from exchange surfaces is called

Breathing that involves active inspiratory and expiratory movements is called

Which statement describes the influence of peers?

The technical term for quiet breathing is

Adolescents’ self-descriptions are often ______.