Question

geologic timeline

• precambrian - 3.5 billion years (3500 million year ago) to 545 mya
• paleozoic - 545 mya to 251 mya
• mesozoic 251 mya to 65 mya
• cenozoic 65 mya to current time

say earth history is a meter stick
1 meter is equal to 4500 mya or 4.5 billion years
so 1 mm is equal to 4.5 million years

• 0 to 223mm before life began
• 223mm to 879mm precambrian
• 879mm to 944mm paleozoic
• 944mm to 986mm mesozoic
• 986mm to 1000mm cenozoic

value: 8
put the items in the correct order.
mesozoic
precambrian
paleozoic
cenozoic

Explanation:

Step1: Analyze time intervals

• Pre - cambrian: 3500 million years ago to 545 mya
• Paleozoic: 545 mya to 251 mya
• Mesozoic: 251 mya to 65 mya
• Cenozoic: 65 mya to present

Step2: Order from oldest to youngest

Based on the time intervals, the order from oldest to youngest is Pre - cambrian (oldest), then Paleozoic, then Mesozoic, and finally Cenozoic (youngest)

Answer:

1. Pre - cambrian
2. Paleozoic
3. Mesozoic
4. Cenozoic