Examlex
Which of the following are the only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart?
Systems Theory
A conceptual framework that examines how various components of a system interact and influence each other within the whole.
Positive Feedback
Feedback that stimulates change.
External Stimuli
Things that are visual (sight), auditory (hearing), olfactory (smell), tactile (touch), and gustatory (taste).
Basic Need
Fundamental requirements necessary for individuals to live a healthy and sustainable life, including food, water, shelter, and security.
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