NEED HELP WITH THIS PLS
What is true about eubacteria?
A. They are all pathogenic.
B. They are found everywhere.
C. They have a nucleus.
D. They can be seen without a microscope.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.