Over half of India's population works in agriculture, and monsoon rains directly affect their incomes and livelihood. Agriculture adds up to more than 15% of India's Gross Domestic Product (GDP), which means that when crops fail because of too little rain, the economy suffers.
Answer:
I believe the answer is B.
I believe that it is Olmec.
The answer for "What is petrified wood made of?" would be minerals.
