Question

Develop a visual timeline illustrating the major geological periods in Earth's history. Include key events, such as mass extinctions, the formation of supercontinents, and changes in climate. Write captions explaining each significant period.

Answer 1

1. **Hadean Eon (4.6 - 4.0 billion years ago)**: Earth's formation. The planet was extremely hot, and there was no life.

2. **Archean Eon (4.0 - 2.5 billion years ago)**: The first continents formed. The first life forms, simple bacteria and archaea, appeared.

3. **Proterozoic Eon (2.5 billion - 541 million years ago)**: Oxygen began to accumulate in the atmosphere. The first multicellular organisms appeared.

4. **Paleozoic Era (541 - 252 million years ago)**: This era saw the development of many types of marine invertebrates, fish, and land plants. The supercontinent Pangea formed. The era ended with the largest mass extinction in history.

5. **Mesozoic Era (252 - 66 million years ago)**: The age of the dinosaurs. The first mammals and birds appeared. Pangea began to break apart. The era ended with a mass extinction that wiped out the dinosaurs.

6. **Cenozoic Era (66 million years ago - present)**: The age of mammals. Humans evolved. The current continents took their shape.

Remember to include the formation of the supercontinents, changes in climate, and mass extinctions at the appropriate points on your timeline.

Step-by-step explanation: