You are studying a group of fossils, and you notice that a particular trait is present in the older fossils, but that this trait disappears in the more recent species. what is the meaning of this observation?

Is an evolutionary sign in the specie

Explanation:

Trough the passing of time, the species changes little by little depending on the environmental conditions and the genetic traits that has from their parents.

Evolution is long term process in which the species start to adapt to their new environmental conditions.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

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