Which of the following lists of elements are in the same PERIOD? * Li, Be, Fr, O
Sc, B, C, Ne
Ca, V, Cu, Kr
He, Ne, Ar, Kr

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

Chris is about to do an experiment to measure the density of water at several temperatures. his teacher has him prepare and sign a safety contract before beginning the experiment. which term is mostlikely part of the safety contract