A tercet is a three line stanza.
It's not a genre, nor a rhyming scheme, nor is it a figure of speech. Tercets usually have more than 4 syllables per line.
Answer:
Isaac Newton changed the world by adding scientific and mathematic knowledge to the world that we still use today. Isaac Newton figured out the principal of gravity and develop the universal law of gravitation. This changed the world because he didn't only establish a law of gravity for one specific place, his law was universal.
Grover proves that he is a real friend to Percy. For example, during the battle between Percy and Ares, Grover supports Percy throughout the conflict.
I'm sorry I only have the answer for the first question. I hope this helped you enough though
Answer:
1 modern
2jjdh
3 do the remaining by ur self
