locomotive engineer license

9. Their emotional appeal Balsa wood can be a lightweight wood variety taken from trees of the name that hail from your rainforests of Central America, South America, plus some other regions. The warm and humid conditions in these areas are fantastic for the development of this plant. Balsa trees grow very rapidly - it usually takes only a decade for any tree being mature enough for cutting. However, once past the ten-year marker, an unharvested tree would harden on the exterior and rot inside, making this a useless piece.