Flatworms possess excretory organs known as nephridia. Specifically as annelids, flatworms possess a variant known as metanephridia.
Answer:
a gradual increase in the overall temperature of the earth's atmosphere because of the greenhouse effect caused by increased levels of pollutants.
Explanation:
The 3 domains are bacteria, archaea, and eukarya. The domain bacteria consists of the kingdom 'bacteria'. The domain archaea consists of the kingdom 'archaea.' The domain eukarya consists of the kingdoms 'plantae', 'animalia', 'fungi', and 'protista.'
