You isolate a molecule from an alien creature. It is double stranded and has new unknown nitrogenous bases. It has B-D and R-Q base pairs. Is this molecule more likely to be DNA or RNA? Explain your answer. *

What are charcteristics of lithosphere?

Cells are adapted to preform specific functions. which of the following terms refers to this capability?

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.