Which process is the most responsible for the increase in early Earth's atmospheric oxygen levels?
Photosynthesis
Usually the place with the most stable community
(ex: Tall growing trees, plants that live a long time)
Trees that drop their leaves in colder seasons, in order to conserve water.
Some other secondary consumers are carnivores and others are omnivores because they also eat both plants and meat. For example Human, human are secondary consumers, and human eat both plants and meat. There are also other animals that are considered as omnivores.
