ronaldoedp445
Answered

Discover the best answers at Westonci.ca, where experts share their insights and knowledge with you. Connect with a community of experts ready to help you find solutions to your questions quickly and accurately. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

Study this geologic time scale.

| ERA | PERIOD | MILLIONS OF YEARS AGO | KEY EVENTS |
|-----------|--------------|-----------------------|-----------------------------|
| Cenozoic | Quaternary | | Humans evolve |
| | Tertiary | | Extinction of dinosaurs |
| Mesozoic | Cretaceous | | |
| | Jurassic | | |
| | Triassic | | |
| Paleozoic | Permian | | Permian mass extinction |
| | Carboniferous| 330 | Invertebrates become common |
| | Devonian | | |
| | Silurian | | |
| | Ordovician | | |
| | Cambrian | | |
| Proterozoic| Precambrian | | Earliest life |
| Archean | | 3500 | |
| Hadean | | | |

How long ago did invertebrates become common on Earth?

A. 1.6 million years ago
B. 132 million years ago
C. 410 million years ago
D. 520 million years ago

Sagot :

GinnyAnswer
To determine when invertebrates became common on Earth, we need to refer to the geologic time scale in the given table. According to the table, this event is marked in the Paleozoic era. This era includes several periods listed as follows:
- Permian
- Carboniferous
- Devonian
- Silurian
- Ordovician
- Cambrian

Among these periods, the Devonian period, which occurred approximately 410 million years ago, stands out as the period when invertebrates became common.

Hence, the correct answer is:
410 million years ago.
We hope this information was helpful. Feel free to return anytime for more answers to your questions and concerns. Thank you for your visit. We're dedicated to helping you find the information you need, whenever you need it. Keep exploring Westonci.ca for more insightful answers to your questions. We're here to help.