What are organisms that can produce their own food from substances available in their surroundings using light or chemical energy?

Name the type of chemical that speeds up digestion

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Matched chromosomes carrying information about the same characteristics in the organism are called