25. Darwin calls his theory 26. Darwin waits for more than __20 years, before his theories are made

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

As a result of climate change earths temperature is rising and sea ice is melting what is a likely effect? answer : populations of walruses and polar bears will decline

What is one affect on the australian environment due to the introduction of non-native european rabbits