Save Status:
or to save your progress. The page will not refresh.
Controls:
SPACEBAR SWITCHES TYPING DIRECTION
Answer Key:
Edit a Copy:
Make Your Own:
Crossword Word Search
Rate This Puzzle:
Log in or sign up to rate this puzzle.

Science Crossword (chapters 0-3)

Across
Small early continents
The process by which one element naturally changes into another
When all of its members have died
Down
The characteristics that species develop over time that help them survive in a particular environment
The preserved remains or evidence of past living organisms
The time in Earth's history from 542 million years ago to the present