Students placed equal amounts of bacteria on five teen identical agar plates containing the same amounts and types of nutrients. five of the plates were kept at 0 degrees celsius, five were kept at 45 degrees celsius, and five were kept at 22 degrees celsius room tempture

i'd say that the moon rock is about 2.2 billion years old.

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