Organisms change their behavior in responses to changes in the environment.
All living things can respond to stimuli in the exterior environment, it is a form of energy-light waves or sound vibrations, From what they sense they will make necessary changes to their diet and or where they are located. Such as winter weather which is a type stimuli will cause some animals to start talking.
Can u write it more specifically? so that I can answer
7 would be correct because I divide it
1) Ca-37, with a half-life of 181.1(10) ms.