How might microevolution have
occurred in a population of wading
birds after only one very rainy
season?
A. The allele
frequency for long
legs increased.
B. A new species of
bird evolved that
could hold its
breath a longer
time.
C. The next
generation had
webbed feet
unlike the
parents.

Evolution means there is some kind of transformation in genetic material. That being said I believe your answer is C.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this