The phrase "heterogeneous nature" means that something is composed of different types or elements that are not the same. It refers to a mixture or variety of different things. Full definition
The artists in the exhibition made their initial «point of entry» into the art historical discourse during the 1990s and reflect the increasingly heterogeneous nature of the art world during this time when many women artists and artists of color attained unprecedented prominence. (anthonymeierfinearts.com)
But in the production of consciousness by the brain, the terms are heterogeneous natures altogether; and as far as our understanding goes, it is as great a miracle as if we said, Thought is «spontaneously generated,» or «created out of nothing.» (religion-online.org)
their decay occurs due to blocking of origin upwardly directed constantly deploy components of their intangible essences /, as the maximum possible heterogeneous nature of God to the minimum possible number of cell uniformity (№ 1h) and God on the basis of the material components of the minimum possible № 1 deploys heterogeneous to its essence as possible numerical element uniformity (№ 2H). (globaleducationmagazine.com)