Answer:
I think stirring is the right answer
Relative<span> species </span>abundance<span> is a component of biodiversity and refers to how common or rare a species is </span>relative<span> to other species in a defined location or community. </span>Relative abundance<span> is the percent composition of an organism of a particular kind </span>relative<span> to the total number of organisms in the area.
I don't know if your looking for this exact definition so i'm sorry if i'm wrong
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Air pollution is the addition of impurities to the atmosphere. A physicist would be concerned because pollutants can reduce sunlight reaching the earth and this quantity, radiation, would fall under the scope of a physicist. Physicists might also be concerned with the absorption of heat by certain pollutants. They would be concerned with studying how much heat is absorbed by each molecule to ascertain the impact of the entire contamination in the atmosphere.
Rock formed by heat and pressure
