Vocabulary
Severe or unpleasant
harsh
Gas essential for life
oxygen
Simplest form of matter
element
Metal used in construction and tools
iron
Microscopic animal that can survive extreme conditions
tardigrade
To change to fit new circumstances.
Adapt
Absence of something
lack of
Flourish
thrive
Very severe or dangerous
extreme
Organism that produces methane as a metabolic byproduct
methanogen
State of being
condition
A high ___________ of salt.
Level
Normal or expected
typical
Organism that thrives in extreme conditions
extremophile
Too small to be seen with the naked eye
microscopic
Manage
handle
Warm-blooded animal
mammal
Scientist who studies life in space
astrobiologist
Severe or unpleasant
harsh
The region beyond Earth’s atmosphere
outer space
Surroundings
environment
Existence
life
Assortment
variety
Capable of supporting life
habitable
Living thing that is essential to an ecosystem
necessary organism