Stimulus?
There are many examples. For instance:Your shadowElectromagnetic radiation (inc. visible light)temperatureGravitySound
anything that does not produce light but can reflect it
plasma
Lights are coloured by the light they emit and are additive, while pigments are coloured by the light they absorb/reflect and are subtractive.
Response means reaction, as in a movement, change, or emission (like heat, light, or sound).
Examples of things that produce heat and light include the sun, a burning candle, a light bulb, and a campfire. These sources emit energy in the form of both heat and light through various processes such as combustion or nuclear fusion.
Incandescent light bulbs and halogen light bulbs are examples of light bulbs that produce heat.
a mirror
light bulbs
Photo-voltaic cells or panels as they are often called, produce electricity in response to incident light
Three things that produce heat are a light bulb, fire, and the sun
photosynthesis: when plants use light to produce Oxygen
Examples of light energy include sunlight, light bulbs, and a campfire flame. Light energy is a form of electromagnetic radiation that can be used to generate heat and produce electricity.
lightbulbs and the sun
fire
Tropism is the directional growth response of a plant in response to a stimulus. Two examples of tropism are phototropism, where plants grow towards light, and gravitropism, where plants grow in response to gravity.
Examples of stimulus reaction in plants include phototropism (response to light), gravitropism (response to gravity), thigmotropism (response to touch), and hydrotropism (response to water). These responses allow plants to adapt to their environment and optimize their growth and survival.