Question

(HELP IM CLUELESS) Biodiversity

542 500
450 400 350 360 250 200 150 160 60
Millions of years ago
Examine the graph that shows the changes in biodiversity over the past 500 million years. Analyze the graph at each of the yellow
triangles. Select the options below that correspond to the events occurring at the yellow triangles. Select ALL that apply.
A)
B)
C)
The change in biodiversity was most stable at the times indicated by the
yellow triangles.
There have been five mass extinction events, with the earliest occurring at
450 million years ago.
Species were evolving faster than the extinction rates, resulting in new
species forming quickly over time.
Humans were altering the environment too quickly with deforestation and
climate change, resulting in many lost species in a short period of time.
The environment was changing faster than the species were adapted at the
time points labeled by the yellow triangles, resulting in a loss of species.
D)
E)

Answer 1

The yellow triangles on the biodiversity graph likely represent the five mass extinction events of Earth's history, with significant loss of species due to rapid environmental changes outpacing the adaptation of species.

Step-by-step explanation:

The graph indicating changes in biodiversity over the past 500 million years shows points represented by yellow triangles, which likely correspond to periods of mass extinctions. During these times, marked by the yellow triangles, the environment was changing faster than the species were able to adapt, leading to a significant loss of species. There have indeed been five mass extinction events observed in Earth's history, which are reflected in the fossil record. The earliest of these events occurred around 450 million years ago. It's also important to note that current extinction rates are estimated to be up to 500 times higher than the background rate seen in the fossil record, a surge attributable in part to human activities such as deforestation and climate change, which have accelerated habitat loss and therefore species loss.

As for the options provided, Option B) 'There have been five mass extinction events, with the earliest occurring at 450 million years ago.' and Option E) 'The environment was changing faster than the species were adapted at the time points labeled by the yellow triangles, resulting in a loss of species.' are the correct ones that apply to the events occurring at the yellow triangles.

Answer 2

B) There have been five mass extinction events, with the earliest occurring at 450 million years ago.

E) The environment was changing faster than the species were adapted at the times points labeled by the yellow triangles, resulting in a loss of species.

Step-by-step explanation: