Answer:
The last one: dinosaur footprints preserved in mud turned to rock
Fossils have to be physical remains of an animal.
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Answer:
Only one species can fill an ecological niche because each niche is destined exclusively for each species, since its structure, physiology and behavior determine it.
Explanation:
An ecological niche is the way in which each species relates to its environment, to other species and takes advantage of the resources available for its development, being an exclusive and individual characteristic of that species.
The ecological niche is a concept that many consider abstract, since it is unique for a species. Each species has a physical structure, functioning and behavior that differentiates it from the others, which leads it to occupy a certain place within an ecosystem, which would be its ecological niche.
Learn more:
Ecological niche brainly.com/question/718384
The oxygen is inhaled to the blood vessel which brings the oxygen to a cell.
The answer is a Nonpolar covalent bond. Hope this Helps:)))
Answer:
C the shapes of continents appeared to allow them to fit together