Kate is researching air pollution and finds some information on ozone. she knows that ozone is a good thing as part of the ozone layer, so why is it also an air pollutant?

a) at ground level, ozone contributes to smog.

b) we breathe out ozone, adding it to the atmosphere.

c) ozone breaks into carbon dioxide.

d) it contributes to global warming.

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.

Smallest intensity of a stimulus that you can detect 50 percent of the time is