Which statement is an example of mutualism? O A koala eats eucalyptus leaves, and it is unharmed by the poison in the leaves.
O A deer tick feeds on the blood of a deer, and the deer loses blood and nutrients.
A plover bird feeds on food stuck in a crocodile's teeth, and the crocodile gets its teeth cleaned in the process.
O A hookworm feeds on the small intestine of a dog, causing the dog to lose weight and become weak.

format change of dna.  

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.

japan is the correct anwser because i already took the test and i passed it