Apopulation of 1,000 birds exists on a small pacific island. some of the birds are yellow, a characteristic determined by a recessive allele. the others are green, a characteristic determined by a dominant allele. a hurricane on the island kills most of the birds from this population. only 10 remain, and those birds all have yellow feathers. which of the following statements is true?
the hurricane has caused a population bottleneck and a loss of genetic diversity. this situation illustrates the effect of a mutation event. assuming that no new birds come to the island and no mutations occur, future generations of this population will contain both green and yellow birds. the 10 remaining birds will mate only with each other, and this will contribute to gene flow in the population.

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where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

well, i believe that the answer is 2. : 3

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.