A stimuli or stimulus is a change in an organisms surroundings that provokes a response from the organism.
stimulus
its niche
simuli
The surroundings where organisms live is called a habitat.
The Theory of Evolution promotes the idea that the strongest living organisms adapt to their surroundings and survive.
other organisms or their surroundings.
Organisms use eyes to see the outside world.
Diffusion and osmosis.
the space an organism occupies is called a niche the surroundings of and organism would be its habitat I hope this is what you meant by organisms surroundings? if not restate question a little more clearly
Charles Darwin's theory of evolution.survival of the fittest
Ecosystem