Misc: who started the dragonlance series?

Questions

it can take as long as ---------- hours to hard-boil an ostrich egg?

it is estimated that millions of trees are planted by forgetful----------?

it is physically impossible for ---------- to look up in the sky?

it takes ---------- head of cattle to produce one pound of adrenaline?

it takes 12,000 head of cattle to produce one pound of----------?