Which of these is a difference between a dna and an rna molecule? which of these is a difference between a dna and an rna molecule? dna contains nitrogenous bases, whereas rna contains phosphate groups. dna is a polymer composed of nucleotides, whereas rna is a polymer composed of nucleic acids. dna contains five-carbon sugars, whereas rna contains six-carbon sugars. dna is usually double-stranded, whereas rna is usually single-stranded. dna contains uracil, whereas rna contains thymine?

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.