I’m the three domain system which of the following domains includes organisms from more than one kingdom

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

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