Carbon is extremely important for all organisms. Because of this, what do we call carbon? A. the element of air
B. the element of life
C. the element of water

the element of life sorry if I'm wrong hope this helps

Explanation: googled it

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms