2) Millions of years ago, this area was covered by ocean. Which rock layer shows this tim period? #___

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

If a particle has z = 25 and 23 electrons, what is its charge?