Glossary
Chapter 5
  absent not present, missing
  alarming shocking, scary
  appalling shocking, very upsetting
  asteroid a large rock in outer space
  auction a sale in which items are sold to the person who offers the most money
  brink the top edge of a cliff
  catastrophe a great disaster
  ceases stops an action
  climate the type of weather that a place has
  comet an object made of dust, gas, or ice that travels in outer space
  convert change
  descendants people or animals born into a certain family or group
  devise create, invent, think of
  died off died one after another
  displaced removed
  elaborate complex, detailed
  eliminated removed or gotten rid of
  estimate make a judgment about
  expect think something will happen
  exploitation using too much of something, usually in a greedy way
  extinct no longer in existence
  fossilized when a dead animal or plant was buried and became hard like a rock
  fungi living things that eat dead plants or animals and cannot survive apart from them
  glamorous seen as interesting and exciting
  greater larger
  ice ages periods of time when Earth was very cold and much of Earths water turned to ice
  identified named
  impact a hard hit
  individual one of a group
  keep close tabs on notice what something is doing
  mass extinction the death of all animals or plants in many species
  neglect a state of not giving enough attention to something
  non-native from somewhere else
  oblivion nothingness
  organisms living things
  progressing advancing, moving forward
  skeleton a bodys bones
  species groups of living things
  surviving staying alive
  teetering rocking back and forth in a dangerous way
  track follow the movement of something
  triggered caused
  wholesale destruction very bad damage that affects many things