AP BIOLOGY

Detailed explanation-1: -Hunger and thirst are both influenced by internal stimuli, or the stimulus that came inside our body. Once an internal stimulus is felt, it would cause a change in behavior. For an instance, if a lioness feels hungry, that would drive this animal to look for a food, particularly for a prey.

Detailed explanation-2: -Stimulus is of two types, external and internal. Smell, sound, etc., are examples of external stimuli and hunger, thirst, etc., are examples of internal stimuli.

Detailed explanation-3: -Internal stimuli are internal factors that cause an organism to respond in order to maintain homeostasis. In animals, there are nerve receptors inside the body that will pick up on changes that occur, such as oxygen and carbon dioxide levels, blood sugar levels, water levels, blood pH, and core body temperature.

Detailed explanation-4: -The external stimulus includes touch and pain, vision, smell, taste, sound, and balance (equilibrium). These sensory stimuli are activated by external changes. Pain and touch: Pain is the stimulus that can cause a major response from the body. Pain can also change the behavior of the organism.

Detailed explanation-5: -Internal stimuli are changes, experiences, or feelings that occur within someone. Examples include hunger, thirst, and emotional states. Internal stimuli are often contrasted with external stimuli, which are changes or experiences that occur outside.