iridium is a substance found only in asteroids and other space objects. this graph shows the amount of…

iridium is a substance found only in asteroids and other space objects. this graph shows the amount of iridium found in different sediment layers of earth. they are marked off into 17 sections representing time. what most likely happened in sediment layer 5? a massive volcano erupted, causing global warming and lava flow, which in turn caused global warming. more iridium was produced by space objects and dumped by local factories. the impact of a space object led to the deposit of a layer of sediment high in iridium. fewer impacts lead to a drop in iridium levels and a mass extinction caused by a lack of sunshine. iridium levels iridium levels 25 20 15 10 5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 sediment layer

iridium is a substance found only in asteroids and other space objects. this graph shows the amount of iridium found in different sediment layers of earth. they are marked off into 17 sections representing time. what most likely happened in sediment layer 5? a massive volcano erupted, causing global warming and lava flow, which in turn caused global warming. more iridium was produced by space objects and dumped by local factories. the impact of a space object led to the deposit of a layer of sediment high in iridium. fewer impacts lead to a drop in iridium levels and a mass extinction caused by a lack of sunshine. iridium levels iridium levels 25 20 15 10 5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 sediment layer

Answer

Brief Explanations:

Iridium is found in asteroids and space - objects. A spike in iridium levels in a sediment layer is often associated with the impact of a space object. In sediment layer 5, there is a high iridium level.

Answer:

C. The impact of a space object led to the deposit of a layer of sediment high in iridium.