How large is the Boreal Shield in km2?
CREATE TABLE table_15555661_2 (area__km²_ VARCHAR, ecozone VARCHAR)
SELECT COUNT(area__km²_) FROM table_15555661_2 WHERE ecozone = "Boreal Shield"
### Context: CREATE TABLE table_15555661_2 (area__km²_ VARCHAR, ecozone VARCHAR) ### Question: How large is the Boreal Shield in km2? ### Answer: SELECT COUNT(area__km²_) FROM table_15555661_2 WHERE ecozone = "Boreal Shield"