Are aquatic worms producers, primary, secondary, or tertiary consumers?

meiosis is the first to occur after the nuclei of opposite of opposite mating types fuse

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