What transformed the atmosphere from the thick greenhouse-gas filled atmosphere of

early Earth towards the one we have today?

Explanation:

Human activity transfer the earth from thick green house gas to what it is. Activities such as burning of fossil fuel like coal has lead to emission of green houses gasses that deplete our ozone layer.

Construction of companies whose activity emits ozone and other green house gasses that lead to the depletion of our ecosystem.

Deforestation has increase the amount of carbon dioxide in the environment leading it abundance in the atmosphere.

All this activity affect ecosystem, deplete the ozone layer and kept us exposes.

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation:

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.