Task: Question Answering
Input (English): Process:  -Dead organic material accumulates on the bottom of oceans, riverbeds or swamps, mixing with mud and sand -Over time, more sediment piles on top -The resulting heat and pressure transforms the organic layer into a dark and waxy substance known as kerogen -Left alone, the kerogen molecules eventually crack -The molecules break up into shorter and lighter molecules composed almost solely of carbon and hydrogen atoms -It will turn into either petroleum or natural gas -
 Question: What is the effect of less animals die on more sediments pile on top.?
Output (English): against