i think it is bcoz of the most advanced and modern technologies used by human beings.
stimulus
i need to know what in the environment changes the leaves to drop
stimulus
stimulus
often when they change environment, careless etc...
stimulus
stimulus
A change in an organism's environment that causes it to react is called a stimulus. Stimuli can be physical, chemical, or biological factors that trigger a response in an organism to help it adapt and survive in its environment.
forest fire,hurricanes and tornadoes
stimulus
none
There are 7 characteristics of life one of which is irritability, meaning an organism needs to be able to react to its environment, this characteristic or instinct is what causes organisms to react to their environment. The ability to ajust to this change in their environment is adaption.