Answered

Discover the answers you need at Westonci.ca, where experts provide clear and concise information on various topics. Discover a wealth of knowledge from professionals across various disciplines on our user-friendly Q&A 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}{c}
MILLIONS OF \\
YEARS AGO
\end{tabular} & KEY EVENTS \\
\hline
Cenozoic & Quaternary & & \multirow{2}{}{\begin{tabular}{l}
Humans evolve \\
Extinction of \\
Dinosaurs
\end{tabular}} \\
\hline
\multirow{3}{}{Mesozoic} & Tertiary & & \\
\cline{2-3}
& Cretaceous & & \\
\cline{2-3}
& Jurassic & & \\
\cline{2-3}
& Triassic & & \\
\hline
\multirow{5}{}{Paleozoic} & Permian & & \multirow{2}{}{\begin{tabular}{l}
Permian mass \\
extinction
\end{tabular}} \\
\cline{2-3}
& Carboniferous & 300 & \\
\cline{2-3}
& Devonian & 410 & \\
\cline{2-3}
& Ordovician & & Invertebrates \\
\cline{2-3}
& Cambrian & & become common \\
\hline
Proterozoic & Also known as & & \\
\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, we need to refer to the geologic time scale provided.

From the table:
- The presence of invertebrates becoming common is stated to have occurred during the Ordovician period.
- Searching for the time frame of the Ordovician period, we find this information next to the key event mentioning invertebrates.

Upon examination, the precise time point for the Ordovician period shows that invertebrates became common around 410 million years ago.

Thus, the correct answer from the provided choices is:
- 410 million years ago
We appreciate your time. Please come back anytime for the latest information and answers to your questions. We hope our answers were useful. Return anytime for more information and answers to any other questions you have. Thank you for visiting Westonci.ca, your go-to source for reliable answers. Come back soon for more expert insights.