You can find out because you can see what the animal had small feet that means it was small or if the animal has big feet it was a big animal
Robinson Crusoe lived on the island for approximately 15 years before he saw the footprint, which marked the first sign of human life he encountered besides himself.
They mainly look at rings to figure out the age of the tree and how long it lived for
it can tell by studying its teeth
a fossil
About 10 cm
the largest animal in the ocean is the blue whale
an elephant
Turtle? Tortoises
Fossils are bones stick together and they can be a person or animal and if it was a animal you can tell what animal is it where it lived and by the condition you can say it came form a long time ago or present day.
Depending on the environment, it may be possible for a footprint to last more than 30 years. If an environment is exposed to consistent changes and elements, such as rain, wind, etc., then it is just about impossible for a footprint to last that long. In an environment where virtually no elements are present, in a cave for instance, then it could be possible for a footprint to last that long.
Well, most of the time geologists find fossils of plants and animals, and then study them to find out how long ago the plant(or animal) lived.
There are a lot of things you can tell form animals that lived long ago. Fossils give us many atributes to that animal. like the shape teeth what they ate and many other things