Most oil is recovered from an oil field 1.relying on the natural pressure of the system.

2.pumping freshwater into the ground and making the oil float to the top.

3.by simply pumping it out of the ground.

4. only after using procedures that first generate pressure.

70 pts answer the following questions in full sentences and paragraphs, using at least 150 words, in the essay box below. 1. which organisms are carnivores? herbivores? omnivores? 2. if the ecosystem is balanced, which populations should be the largest? the smallest? 3. imagine a group of hunters kills half of the rabbit population. how will the other organisms be affected? 4. imagine disease kills 85 percent of the wolf population. how will the other organisms be affected? 5. imagine a foreign mountain lion species is introduced into the ecosystem. how will the other organisms be affected?