yes
Was the earth atmosphere's composition always the same?
No.
The earth's atmosphere can be imagined as the same relative thickness as the varnish on a model globe.
The early atmosphere of the earth was mainly CO2, where as now its mainly nitrogen (around 78%), Oxygen (around 21%) and a bit of CO2 and argon
always the same
The ozone layer.
No, the atmosphere is not always the same. It can vary in composition and characteristics due to factors like weather patterns, human activities, and natural events like volcanic eruptions. These variations can impact things like air quality, temperature, and precipitation patterns.
No, the atmosphere is constantly changing due to processes like evaporation, condensation, and air movement. Factors like weather patterns, human activities, and natural events can also influence the composition and behavior of the atmosphere.
because they will have the same elements in the atmosphere...
pure substance
No. A compound will always have the same composition.
The composition of pure substances, such as elements and compounds, are always the same. The composition of mixtures can vary.