Atoms with a high electronegativity, like oxygen, have a strong attractive force
for electrons because

A. they have only a few valence electrons and need a total of eight to fulfill the octet rule
B. they're close to filling their outer shell, fulfilling the octet rule
C. opposites attract
D. they're trying to share electrons with other elements of high
electronegativity

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

The independent variable in this experiment is the angle at which the light from the ray box strikes the mirror.hope this .

The anwser is: wave a has a greater pitch and frequency.