A researcher selects three regions X, Y, and Z, and records the types of discharge that enter the regions’ rivers. Which region(s) should be monitored more closely to avoid potential health issues?

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?