What do spf sunscreen and ozone in the earths atmosphere do

In much the same way that a cloud blocks the heat on a hot day, the ozone layer in the stratosphere blocks out the sun's deadly ultraviolet rays. It acts as our planet's natural sunblock.

Explanation:

PLZ MARK BRAINLIEST

asking the goog might u get an answer

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.