Answer:
between 300 and 360 million years
Explanation:
Insects took to the empty skies sometime between 300 and 360 million years ago, long before birds, bats or pterosaurs. Wings allowed them to conquer new habitats and ecological niches, and Insecta quickly established themselves as one of the most diverse and successful animal classes, a position they still hold today
I'd appreciate if you attached the article as well. But i'm 90% sure it's option D. A quick search reveals that it was dubbed Black Saturday due to rapid fire growth within Yellowstone park. Option D is really the only one that relates to that at all.
Hope this helps!
enzymes are most considered as organic compounds and enzymes are considered to be catalysts because they catalyze chemical reactions meaning they decrease the activation energy which speed up chemical reactions