Why did scientists think that nothing lived below 500 metres in the 1840s?

Which of the following sentences best describes the sequence of events that create a hydrothermal event? 

(L1) If something is undernourished, it is  ___________________ food to maintain healthy growth. 

(L14) If a number hovers close to something else, it ___________________it. 

(L83) If something is thriving, it is growing __________________.

When a cold seep forms, the crust breaks apart and releases CO2, which mixes with the ocean water to form sugars.

Sunlight triggers the chemical reactions necessary for the formation of hydrothermal vents.

Fish consume the minerals from the hydrothermal vents.

Creatures that live in the deepest part of the ocean do not need to create their own form of light.

Whale falls are the bodies of dead whales ______________on the ocean floor.

Hydrothermal vents, whale falls, and cold seep habitats are all ___________environments deep in the ocean that share some interesting similarities.

Hydrothermal vents ______ hot, mineral-rich water,

Cold seeps release ______________ and other chemicals.

Which of the following sentences best describes the sequence of events that create a hydrothermal event?

Organize the following summary of the text.