It is that People decide to create systems designed to solve problems, but each solution creates additional problems.
Answer:
the fight
Explanation:
"The fight" is the main noun of the sentence and the pronoun "it" was used refer to the noun. Also, it's the last (and only) noun mentioned before the pronoun.
Answer: self production
Explanation: Plants tends to manufacture for them self unlike animals, they use the energy gotten from the sun to convert carbon dioxide and water in energy rich sugar called glucose.
Also plants use leaves to make food for them self, oxygen is produced as a by-product and carbon dioxide is gotten from the atmosphere.
C.)S-V-N and <span>a.)S-V-O</span>