Quiz · Exploring Earth's Last Frontier

Question 1What is the main subject of this talk about the ocean?

The history of mapping the ocean floor The extreme conditions, strange life and value of the deep sea The dangers faced by submarine crews underwater The growth of the global deep-sea fishing industry

Question 2How do ecosystems around underwater volcanic vents obtain their energy?

From sunlight filtering down through the water From plants sinking from the ocean surface From the enormous pressure at the seabed From chemicals dissolved in the scalding water

Question 3Why does the speaker most likely mention mining companies at the end of the talk?

To warn that the seabed may be mined before its creatures are even catalogued To praise companies for funding deep-sea scientific research To explain why metal prices around the world are rising To show that mining has already destroyed most deep ecosystems