Several species of bacteria, such as E. coli, can be found in the gut of many animals and help maintain the conditions necessary for the blank of food

E. coli is a specie of bacteria that are found in the gut of many animals which helps in maintaining the conditions necessary for the digestion of food.

Explanation:

E. coli is a bacteria which causes no harm to the human or other animals while living in the stomach. In stomach, it helps the digestion of food and make nutrients like vitamin K, which is necessary for the growth of animal body and make the stomach healthy.

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.

answer; /// the shaft of the hair consists of dead cells;