PLEASE HELP ME!! The topographic Map shows the location of a park ranger at point X when the message is received that an injured hiker needs help at point Z

Which of these is the closest to the difference in elevation between the locations of the ranger and the injured hiker

Can someone me with 1 to 4 plz. fast

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)