What is the difference between archaebacteria, eubacteria, protista, and fungi?

Archaebacteria are like Eubacteria, which are just able to survive dangerous conditions, such as high salinity, extreme temperatures, and no oxygen.

Eubacteria are your garden-variety prokaryotic organisms that can cause the common cold and make bread rise, which don't have nuclei.

Fungi are similar to plants in the way that their cells are structured, except they have cell walls made of chitin, instead of cellulose like Plants. They decompose food and eat it using chemosynthesis, breaking it down into organic matter, which allows for the cycling of materials through a food chain.

Protista is really tough. You see, protists are basically a fancy word scientists picked instead of "miscellaneous", because there are plant-like, fungi-like, and animal-like protists. They really have no defining characteristics to speak of except that they have weird quirky qualities that don't allow them to fit in any groups.

Hope this helped! :)

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.

yes, because even though a theory has a  lot of evidence to support it, it is not always true