Marine Families and Mass Extinctions

According to your graph, the largest single drop in the number of marine families occurs at the boundary between the Paleozoic Era and the Mesozoic Era, corresponding to the (a)   mass extinction event.

Tags

NGSS.HS-LS4-5

NGSS.HS-LS4-2

Which of the following approximate dates represents the end of the Mesozoic Era?

• 535 MA

• 252 MA

• 66 MA

• 445 MA

Tags

NGSS.MS-ESS1-4

Using the uniform scale you established for your X-axis (Time), how many marine families were present approximately 40 million years ago.

Tags

NGSS.HS-LS4-5

What is the name of the chunk of time smaller than a Period on our Doodle Notes. (We don't really study these in this class but it should be on there)

(a)  

On your graph, a sudden, dramatic decrease in marine family diversity followed by a relatively slow recovery is the key visual pattern that distinguishes a (a)   event.

Tags

NGSS.HS-LS4-5

Which mass extinction event, marked on your graph, is often linked to global cooling and a major period of glaciation as its primary cause?

(a)  

Tags

NGSS.HS-LS4-5

Identify the mass extinction event that, according to your graph, had the largest relative percentage loss of marine families.

What detail did you include on your graph about the overall percent loss percentage for this event?

Why is the Cambrian Explosion (labeled on your graph) an essential event to understand the initial trend of marine family diversity?

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-1

NGSS.HS-LS4-4