Lichen is an organism that is half bacteria, half fungus. Lichen release oxalic acid which breaks down the molecular structure of tough surfaces, like granite. This is an example of what type of weathering?
O Oxidation
Abrasion
Biological chemical
O Biological mechanical

not sure if this is what you'r looking for eubacteria and archaebacteria

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.