I. red help this is Biology so don’t guess this is my sister work

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.

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants