Evidence of plate tectonics

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Across
  1. 2. ____ _____ have been found in North America and EU
  2. 3. who did the theory start with
  3. 5. what was discovered in 1940 with sonar radars used in the war
  4. 6. some continents eg. south America and Africa fit together like a ?
Down
  1. 1. similar ______ ______ were found in Antartica, Africa, S. America, India & Australia
  2. 4. ? of the Megascolecidae family are found in New Zealand, Asia and N. America
  3. 5. what fossil is found in south America and Africa and begins with m