Nitrogen is most abundant gas in atmosphere while oxygen is second most abundant gas. The nitrogen and oxygen are present in diatomic form such as O₂ and N₂.
Water vapors are also present but the percentage vary according to location. In hot humid areas the percentage of water is 0- 4% and it is third abundant gas.
The percentage of other gases in atmosphere are given below:
Ozone gas is the least abundant gas in the earth's atmosphere. Their concentration is least but it has hue impact on the people and animals living in earth.
Ozone is the the layer which protects the incoming ultraviolet rays from the sun which reaches the earth.
The percentage of ozone gas is 0.000004% in the atmosphere which is very less.
The organism or product that is being described in the sentence
above is chalk. This is the product that is formed with the use of the remains
of calcium carbonate. It has a mineral calcite and useful for writing or
drawing in smooth and writable surfaces.
He was a close friend to Charles Darwin so he helped him out in creating the theory of evolution so I would say C: He developed the idea of inheritance of acquired characteristics.
