There are five questions which are related to the Drilling down into petroleum's impact on life on Earth.
1. C. Iran produces more oil than the United States.
RPR is referred to as the Reserve to Production Ratio which is measured in years. Higher RPR of Iran demonstrates that it has more extraction rate than United States.
2. B. Human learned how to extract and burn fuel.
The major shift in Carbon cycle is because fossils and fuels have been excessively used extracted and burned for fuel and energy.
4. A. Trees of the Amazon remove Carbon dioxide from the air.
Forests are essential because they help remove carbon dioxide from air. The existing forests of Amazon are absorbing carbon dioxide which results in moderate climate and reduced climate change.
5. A. Warming waters spark bleaching events. Along with the bleaching, the ocean is becoming more acidic.
The biggest threat to coral reefs is bleaching event. Warming the waters spark to bleaching events.
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