Simplify each.

1. a^5 · a^6 = ________

2. b^6 · b^4 · b^5 = _______

3. (3d^4)(2d^6)(4d^9) = ______

4. (5f^2g)(-2fg^3) = ________

5. (a^5 b^10)^0 = _______