Answer:
What dentists battle on a daily basis
Made of ten but two we make, When assembled others quake, Five apart and we are weak, Five together havoc wreak. What are we?
What you become during a workout?
Two year-old children who throw tantrums get this nickname. So did the tsar "Ivan."
What is so delicate that even mentioning it breaks it?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.