Why might a scientist repeat an experiment if he/she didn't make a mistake in the first one? an experiment should be repeated to

a) increase income for increased work.

b) prove how good of a scientist you are.

c) double check your results.

d) show how smart you are.

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

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.

Explain why ecosystem diversity results in species diversity in a healthy biosphere