HELP NOW I NEED A GOOD GRADE 30 points

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Why does miranda have that particular vision of dr hildesheim answer?

Number and variety of living organism; includes genetic, species, and ecological types