Homologous structures are structures found in one species that have the same basic anatomical structure and embryonic origin as those found in another species. If homologous structures are found on organisms of two different species, the species are related, even if only distantly. Which of the following structures are homologous and illustrate evidence of an evolutionary relationship?
A.
a bird's wing and a butterfly's wing
B.
a wasp's wing and a dolphin's flipper
C.
a catfish's fin and a bee's antenna
D.
a whale's flipper and a cat's leg

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.

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.

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )