Environmental change can be determined in several ways:
yes they do ;) the skin for the temperature :)
detect any changes in the environment (noise level, vibration, temperature)
A stimulus is a DETECTECTABLE change in the environment. e.g. light is a stimulus to an animal or plant if it can detect the light with a sensing eye or chemical
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people change their environment when they use natural resources by when theyuse pots and pans to cook and they also use brooms and dustpans to clean.
because they worked
eyes and toes, mainly toes since they can use their toes to detect the slightest wave movement
shelter
protectors
With help of neurosensory like cells .
these have one or more receptors that detect change in either the external or internal environment, information that is detected is transmitted as an electrical impulse to the CNS by the affector neuron.