How is the ecosystem likely to change as a result

Decrease in biodiversity | Loss of habitat

The ecosystem is likely to respond with a decrease in biodiversity and a loss of habitat. Deforestation cut out and will continue to cut out a wide portion of habitat, as animals and plant lose their habitat, they will be unable to survive and reproduce, thus extinction will come for many species, resulting in a decrease of biodiversity.  

One reason is animal teeth are in an extraordinary structure.another reason is animal teeth are creative