EVERYDAY SCIENCE

Detailed explanation-1: -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-2: -A stimulus is a change in the environment that produces a behavioral response. It may be an object or an event perceived through an animal’s senses. Stimuli may include the sight of food, the sound of a potential predator, or the smell of a mate.

Detailed explanation-3: -A stimulus is a signal from the animal’s body or its environment. It is a form of energy-light waves or sound vibrations, for example. All but the simplest animals receive a stimulus-light, sound, taste, touch, or smell-through special cells called receptors, located in many places on or in the body.

Detailed explanation-4: -Internal stimulus: a stimulus that comes from inside an organism. Examples: 1. You feel hungry so you eat some food.