Answered

Westonci.ca offers fast, accurate answers to your questions. Join our community and get the insights you need now. Explore a wealth of knowledge from professionals across different disciplines on our comprehensive platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

Study this image of a geologic time scale.

\begin{tabular}{|c|c|c|c|}
\hline ERA & PERIOD & \begin{tabular}{l}
MILLIONS OF \\
YEARS AGO
\end{tabular} & KEY EVENTS \\
\hline \multirow{2}{}{ Cenozoic } & Quaternary & & \multirow{2}{}{\begin{tabular}{l}
Humans evolve \\
Extinction of \\
Dinosaurs
\end{tabular}} \\
\hline & Tertiary & & \\
\hline \multirow{2}{}{ Mesozoic } & Cretaceous & 138 & \\
\hline & Jurassic & & \\
\hline \multirow{6}{}{ Paleozoic } & Permian & 240 & \multirow{6}{}{\begin{tabular}{l}
Permian mass \\
extinction \\
Invertebrates \\
become common
\end{tabular}} \\
\hline & Carboniferous & 330 & \\
\hline & Devonian & 410 & \\
\hline & Silurian & & \\
\hline & Ordovician & & \\
\hline & Cambrian & & \\
\hline \begin{tabular}{l}
Proterozoic \\
Archean
\end{tabular} & \multirow{2}{}{\begin{tabular}{l}
Also known \\
as \\
Precambrian
\end{tabular}} & 3500 & \\
\hline & Hadean & & \\
\hline
\end{tabular}

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, let's refer to the Paleozoic era on the geologic time scale.

In the Paleozoic era, there's a listing for the Devonian period with a note "Invertebrates become common" marked at "410 million years ago".

Based on this information:

- Era: Paleozoic
- Period: Devonian
- Years Ago: 410 million (when invertebrates became common)

Thus, the correct answer to the question "How long ago did invertebrates become common on Earth?" is:

410 million years ago.
Thank you for visiting our platform. We hope you found the answers you were looking for. Come back anytime you need more information. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Find reliable answers at Westonci.ca. Visit us again for the latest updates and expert advice.