The survivorship curves of the american robin, a type of migratory songbird, and the common green darner, a type of migratory dragonfly, are shown below. what statement is best supported by the survivorship curves? a. american robins have a high survival rate for most of their lifespan and then decline rapidly in old age. b. a very high proportion of common green darners reach adulthood and live to older ages. c. american robins have similar death rates throughout their lifespan, while the death rate of common green darners changes over their lifespan. d. younger american robins have higher death rates than older american robins, while younger and older common green darners have similar death rates.

I had a similar question in my Intro to bio class I believe the answer is D

IT'S D FOR PLATO.  Have a nice day

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.