The passage used a combination of comparison and contrast and: <span> C. cause and effect.
</span>The passage give us a well descriptive explanation on how the microorganisms (the cause) developed in such a way to the point where their fossils ended up as a petroleum/coal (effect)
The answer should be true
Its to help you understand what all the symbols mean. Youre looking at a city that has a symbol by it, and you dont know what it means so you look at the map key and it tells you.
Microwave,light bulb , phone ,
