2 adverbs to describe how to extinction

"I see: and again, you may notice that the cows and the sheep and the chickens, also, resent extinction strenuously.

The amount on which, the Indian title has been extinguished and the sums paid for the extinction thereof, and the amount on which the Indian title remains to be extinguished.

2 adverbs to describe how to  extinction  - Adverbs for  extinction