6
Source: This question is taken from the Everyday Science
Electrical signals
4
Chlorofluorocarbons
Cell Wall
Cell Membrane
30km
Ionosphere
The release of chlorofluorocarbons into the atmosphere
Dermis
Troposphere, Stratosphere, Mesosphere, Ionosphere
5
Air temperature
3
Troposphere
Filter out ultraviolet rays
Sedimentary rocks
epidermis
Evaporation (mixing) fog
Pinacoderm and choanoderm
Lead - 210
85 km
20 to 30