Question

Question: The "great dying," which saw 96% of all species extinct, was partially caused by (1 point)

Responses:

lower levels of carbon dioxide in the air.

an asteroid impact.

algae consuming too much oxygen from the ocean.

bacteria producing large amounts of toxic methane.

Answer 1

bacteria producing large amounts of toxic methane.

Explanation: massive volcanism (Siberian Traps) warmed oceans and created widespread anoxia, fueling microbial production and release of greenhouse gases (methane) and toxic gases that helped drive the Permian “Great Dying.”