Answer: B) Genes found on chromosomes Explanation: Genetic alteration probably refers to altering Genes found on chromosomes.   Genetic alteration refers to altering DNA sequence. Gene alteration forms genetically modified products that modifies the gene sequence.   Genetic engineering, also called genetic modification or genetic manipulation, is the direct manipulation of an organism's genes using biotechnology.

Answer: B) serving as the interface between the other spheres Explanation: The geosphere is the earth's solid rock or rigid outer layer known as the crust. Without the geosphere it would not be possible for humans to live on the planet. The function of the geosphere serving as the interface between the other spheres.