Ecology is how nature works and flows, without it everything would be messed up, such as food chains and how people would be ranked on natures list.
Answer: It depends on if your only talking about plants if so the answer is coal.
Explanation: The reason being because coal only forms from the compaction of dead plants whereas petroleum forms from compacted plants and animals.
False. Continental slopes are fairly shallow and more of a gentle slope. Hope this helps!