gradual climate change continued climate stability sudden global climate change gradual ecosystem succession
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A large number of species on Earth became extinct during a short time period about 65 million years ago. Based on this pattern of extinction, which is the most likely cause?
Possibilities:
- gradual climate change
- continued climate stability
- sudden global climate change
- gradual ecosystem succession

sudden global climate change