Answer:
Petroleum reservoirs can be found beneath land or the ocean floor. Their crude oil is extracted with giant drilling machines. ... There are huge quantities of petroleum found under Earth's surface and in tar pits that bubble to the surface. Petroleum even exists far below the deepest wells that are developed to extract it
Explanation:
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Plants don't need a specialized respiratory system because they don't have lungs. They take in carbon dioxide and give out oxygen through their pores in their leaves and other tender parts.
Antarctic bottom water is that it is the coldest bottom water. It also has a high oxygen content relative to the rest of the oceans deep waters.
There are three types of community interaction that can affect an ecosystem. These are the competition, commensalism, and mutualism.