<u><em>Answer:</em></u>
<u><em>Combustion</em></u>
<u><em>Explanation:</em></u>
<u><em>The step in the carbon cycle didn’t really exist before the industrial revolution was Combustion</em></u>
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<u><em>please mark me brainliest <3</em></u>
A Dew forms on grass when water vapor forms when molecules cool and join together.
B Gases expand when heated and contract when cooled.
Answer:
Organisms that are more complex, such as eukaryotes, have cells that are specialized for specific functions. Gene regulation needs to be more complex to produce these specialized cells for complex organisms.
Hope this helps!