Which is a component of cell theory?

a. all living things grow into cells.
b. all living things are made of cells.
c. cells come from nonliving matter.
d. cells come from non-cells.

this is a science problem

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.