fossils have a species of bird are found in layer 3. Which layer is most likely to have organisms that lived at the same time as the bird species

Explanation:

The layer most likely to have organisms which lived at the same time as the bird species is Layer 2. Layer 2 is closer to layer 3 than any of the other layers listed. Assuming that layers were laid down sequentially as time passed, it is reasonable to assume that layer 2 was laid down most closely in time to layer 3.

a. to encourage apoptosis

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