I'm not confused on how to answer this help please and thank you

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

Why do oxygen have a strong attractive force for electrons