1. An object sinks in a fluid. Is the fluid more dense or the object more dense? 2. Put these solutions in order in terms of increasing density: 10% NaCl, Water, Isopropyl alcohol.

1. The fluid is more dense. 2. 10%  NaCl, Isopropyl alcohol, Water.

Explanation:

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.