Write a 100 to 150 word paragraph on each selected critical thinking question.
1.Look at a map of the world or a globe and explore the question, how many oceans do we have on Earth, from a critical perspective.
2.Can you think of examples mutualism among humans and other animals?
3.Why do you think that oceanic crust (rocks formed at the bottom of the oceans) is heavier than continental crust (rocks formed on land or underground)?
4.Why is it difficult for scientists to agree on the definition of an active volcano?
