Describe the electron arrangement for each of the following elements. you can draw the arrangement or list the number of electrons in each energy level.
a. oxygen

b. magnesium

c. chlorine

What human activity increases beach erosion?

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel

Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity