Why did A. fibrosa likely go extinct? *

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Fill in the blank with the correct sphere label. a: ⇒ geosphere b: ⇒ biosphere c: ⇒ hydrosphere