Which statement describes the chemical released by the coral and explains its effect is region 12
O The chemical is a pheromone that attracts nearby goby fish so that they can reproduce.
O The chemical is a toxin that causes goby fish to swim away from the region.
O The chemical is a pheromone that attracts goby fish that eat the seaweed on the coral.
O The chemical is a toxin that is spread by the goby fish to kill the seaweed.

there is no stairs in bungalow

explanation:

poof

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

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