How to remove from Toilet ?

There is a toilet in the house we are renting that has a residue left over on the dish as a result of leakage from the tank for I presume, many months/years? Its a brownish (calcium) residue and I have tried scrubbing with a brush and normal toilet cleaner and nothing happens. Any ideas of how to get rid of it without replacing the toilet?

Can I breed a unicorn from a rhino and a horse?

Of course it is. Just be sure you get a pink horse and a blue rhino for optimum rainbowness. And make sure the rhino doesn't poke the horse with its horn during .

When testing the nerves in the knee with a reflex hammer, what is different when the subject is holding a book?

This is part of my homework, except I don't have a reflex hammer or someone to test it on. However, I do know that according to the way nerves work that the knee will jerk upwards starting with touch receptors in the knee, carried by the sensory receptors to the interneuron which carries two signals to the brain and spine and then one impulse travels back to the motor neuron which controls the effector and hence the knee-jerk reaction. But how does holding a book change all of this?

How can you make sure that nail varnish doesn't chip?

Put several layers of clear nailpolish over the top and make sure you don't leave your nails in hot water for too long. Avoid baths and have short showers.

Why does fox8 skip wrestling matches when they are on? fox8?

come on man they wouldant stop skipping it and maria and beth match i cant belive candice michelle is bak is she going to fight on ecw???

Lack of Etiquette in Restaurant?

You should try going out with my 74 year old father-in-law. He picks his nose at the table and then pulls out his prize and looks it over before wiping it on the tablecloth (that is, if we aren't fast enough handing him a napkin). He also puts empty er containers or rolls he has taken a bite out of into the roll basket (again, if we don't catch him in time). Yeeeech!!

Have you examples of how the catholic catechism has changed?

One small thing. I remember women could not enter the church without cover. If you didn't have a veil the girls would put napkins on their heads.