Which will form an ionic bond?
o
a. any two neutral atoms
o
b. two oppositely charged ions
o c. two oxygen atoms
o d. two negative ions

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?