Complex sentence: The process results in the light elements berillium, boron, and lithium in cosmos at a much greater abundances than they are within solar atmospheres, whereas 1 H and 4 He nuclei are represented in the cosmos with approximately primordial abundance.
Split into simpler sentences: The process results in the light elements berillium, boron, and lithium in cosmos at much greater abundances than they are within solar atmospheres. The light elements 1 H and 4 He nuclei are are not a product of spallation and are represented in the cosmos with approximately primordial abundance.