Songs: Never Tear Us Apart - _____?

Questions

in miami, florida, roosting vultures have taken to snatching ---------- from rooftop patios?

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?