Both dna and rna contain a five-carbon sugar. this sugar is a) ribose in both dna and rna. b) deoxyribose in both dna and rna. c) deoxyribose in dna and ribose in rna. d) deoxyribose in rna and ribose in dna.

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.