If you have difficulty removing a ring from your finger, you usually lubricate your finger with oil or soap Why, in most cases, does this procedure work

Chemistry worksheet - i am not sure what they are asking for exactly?

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

The energy that powers a hurricane is derived from