Understanding Fossils: A Glimpse of Earth's History
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Questions and Answers

Why are bones and shells more easily fossilised compared to soft parts of animals and plants?

  • Soft parts of animals and plants are harder to find in the layers of rock where fossils are typically discovered.
  • Soft parts of animals and plants rot away when the animal or plant dies. (correct)
  • Bones and shells have a higher mineral content allowing for better preservation.
  • Bones and shells are more resistant to weathering and decay than soft parts.

Why do fossils in the deeper layers of rock provide information about the earliest forms of life?

  • Deep layers of rock have better preservation conditions for fossils.
  • The deeper layers of rock represent earlier periods in Earth's history. (correct)
  • Deeper layers of rock are easier to excavate, leading to more discoveries.
  • Deep layers of rock contain the oldest fossils.

Why are fossils considered as 'cloudy windows' according to the text?

  • Fossils often have a cloudy appearance due to the minerals they are composed of.
  • Fossils provide a clear view into the past without any distortions.
  • Fossils offer a limited glimpse into what life on Earth was like in the past. (correct)
  • Fossils are often found in cloudy or foggy regions around the world.

What advantage do palaeontologists gain by studying fossils in the higher layers of rock?

<p>Fossils in higher layers offer insights into later forms of life on Earth. (B)</p> Signup and view all the answers

What do the oldest rocks with no fossils suggest according to scientists?

<p>Life did not exist on Earth at the beginning. (A)</p> Signup and view all the answers

Why do scientists believe that new plants and animals have lived on Earth as time went by?

<p>Because new fossils are found in each new layer of rock. (C)</p> Signup and view all the answers

How do trees, especially old and large ones, contribute to habitats according to the text?

<p>They provide habitats for both animals and plants. (A)</p> Signup and view all the answers

What concept explains how the features of an animal help it survive in its habitat?

<p>Adaptation (B)</p> Signup and view all the answers

Why do offspring inherit characteristics from their parents?

<p>Inheritance (A)</p> Signup and view all the answers

Which term best describes when offspring show slight differences from their parents?

<p>Variation (A)</p> Signup and view all the answers

What is the process by which a new plant may vary from its parents?

<p>Variation (D)</p> Signup and view all the answers

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