Answer:
Definitely formal English as formal English is used in formal settings. Both the examples you gave are formal settings.
Answer:
c.
previously defined is not an example of context clue
Answer:
convert into carbon, typically by heating or burning, or during fossilization.
Explanation:
I'm not sure but this is my best guess
Answer:
using fires in wild areas could harm the envierment (TOPIC)
Why would it harm the envierment (question then anser)
give your opinion on why you think this is bad
Explanation:
Truck is to transport as a type of land transport used to convey goods or people.