Scientists can determine if oxygen existed in earth's archean atmosphere by    a.  looking at the amount of salt content in rocks.  b.  looking for oxidized iron in rocks. c.  determining how many people survived. d.  determining the amount of outgassing that occurred.

how do heroes resolve conflicts in beowulf?

question 15 options:

they sue each other in court

they get a mediator

the seek counseling

they get even or take revenge

explanation:

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you