The new species come from old ancestors of the animals that were there, over time they slowly evolved, and they adapted to that new environment.
Photograph the impression, frame the impression, pour the cast, remove the cast is the one that describes the correct order of steps to be taken when casting a soil impression. The correct option among all the options that are given in the question is the second option or option "B". Casting is a great method for preserving some kind of impression to be looked at in the future.
The answer should be reptiles!
The characteristics of reptiles are:
1. They are four-legged
2. They have an outer covering of scales
3. They breathe with the aid of lungs
4. Although most reptiles lay eggs, some also give birth to live young (fertilise internally)!
I hope this helps! :)