The earth’s most important nonrenewable energy source is a. natural gas b. the sun c. coal d. oil

The earth’s most important nonrenewable energy source is "coal".

Non-renewable energy source refers to a source of energy that will in the end run out. Most sources of non-renewable energy source are fossil fuels, for example, coal, gas and oil.  

These natural resources are a noteworthy wellspring of intensity for an immense measure of businesses – be that as it may, there are various drawbacks to non-sustainable power source, including their negative ecological effect and the reality they are in constrained supply.  

Coal originates from the remaining parts of plants that died a huge number of years prior. It has the most abnormal amount of carbon of every single non-renewable energy source.

C is wrong. I think it's A

well, paralell is parallel. i am providing links to .

hope this !

a series circuit is one with all the loads in a row. there is only one path for the electricity to flow. if this circuit was a string of light bulbs, and one blew out, the remaining bulbs would turn off.

unlike in series circuits, a charge in a parallel circuit encounters a single voltage drop during its path through the external circuit. the current through a given branch can be predicted using the ohm's law equation and the voltage drop across the resistor and the resistance of the resistor.

a parallel circuit has certain characteristics and basic rules: a parallel circuit has two or more paths for current to flow through. voltage is the same across each component of the parallel circuit.

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.