In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Question: On how many of the continents do birds live and breed? Answer: seven
Birds live and breed on seven of the continents.

Question: What do we call water that has been used for cleaning, washing, flushing, or manufacturing? Answer: wastewater
We call water that has been used for cleaning, washing, flushing, or manufacturing wastewater.

Question: Which type of lava lavas are less viscous and erupt effusively? Answer: mafic

Mafic type of lava lavas are less viscous and erupt effusively.