Question: Why is it important to be able to date fossils?

Fossils above a specific layer are inferred to be younger than that layer, and those below are older, in line with the law of superposition, a key scientific principle of stratigraphy. Dating of the fossils contributes to a clearer timeline of evolutionary history.

What are the main problems with using fossils?

Explanation: Many fossil records are incomplete because some animals were soft bodied or soft tissue which decays quickly. Also, due to movement of tectonic plates, fossils are destroyed so there are many new fossilised organisms which are destroyed and we dont know about them.

Why are fossils unreliable?

By studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth. There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. This is why scientists cannot be certain about how life began.

What are 3 problems with using fossil fuels?

Cons of Fossil Fuels (Disadvantages)Environmental Degradation. The main disadvantage of using fossil fuels, of course, is the pollution that they cause. Need Truckloads of Reserves. Effect on Human Health. Finite Energy Source (Non-renewable) Oil Spill. Rising Cost. The Health of Coal-mining Workers. Impact on Marine Life.

What does fossil evidence tell us?

Fossils are the remains or traces of ancient life that are usually buried in rocks. Examples include bones, teeth, shells, leaf impressions, nests, and footprints. This evidence reveals what our planet was like long ago. Fossils also show how animals changed over time and how they are related to one another.

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