What types of organisms were the very first living things on earth.
a) multicellular organisms
b) the first living things on earth were not made of cells
c) unicellular organisms
d) both multicellular and unicellular organisms

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation:

b - the respond is innate and varies over time.

good luck!

i think that it is plants

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