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2
3
4
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100

a word which describes something that is commonly seen or used

ordinary

100

a ship that can go underwater

submarine

100

a vehicle that is capable of doing underwater work or investigation

submersible

100

openings in the earth through which molten rock, gases, and rocks are forced out

volcanoes

100

a chemical in the blood that carries hydrogen sulfide as well as oxygen to other parts of the animal’s body

hemoglobin

100

A word which describes something related to medicine

medicinal

200

a colorless gas made up of one sulfur atom and two hydrogen atoms

hydrogen sulfide

200

This kind of relationship refers to two organisms living closely together, with at least one organism benefitting from the other

symbiotic

200

the process by which some organisms use chemical energy to make food

chemosynthesis

200

chemical substances produced in the cells of all plants and animals

enzymes

200

___________ are single-celled microbes

archaea

200

A word which means possibly

potentially

300

long, narrow openings or cracks in the ground or the ocean floor

fissures

300

The word _______________ describes something related to a volcano

volcanic

300

These islands are located in the eastern Pacific Ocean

Galapagos Islands

300

To ____________ something is to form it into crystals

crystallize

300

very unpleasant environment; it is a place in which someone or something has difficulty surviving

hostile

300

a word means that something happens to such a degree that it is difficult to believe

incredibly

400

Hydrothermal vents may show us how life could exist ___________ __ ___ ____________.

elsewhere in the universe

400

Even though sunlight does not reach the hydrothermal vent environment, archaea can still collect energy for making food because:

the archaea collect energy from minerals coming out of the vents

400

processes that support all life on planet earth are ________________ and _______________?

photosynthesis and chemosynthesis

400

The word hydrothermal has two meaningful parts. Which best represents the meaning of hydrothermal?

water + heat

400

What was the passage in Unit 11 all about?

a strange world with unusual organisms