A species that is not native to an ecosystem but is introduced artificially. Usually cause harm to the native species in the area.
The answer is D. Cellular respiration
The second phase of general adaptation syndrome (gas) is characterized
by alarm phase, the stage of resistance and the exhaustion stage. The gas stage gives a description of the both
the short and long term emotional and physical effects of stress. Gas elaborates the relationship between
health and stress.
The greenhouse effect is the trapping of a stars warmth in the lower atmosphere of a planet by gasses in the air trapping the energy. This is similar to what actual greenhouses do, where they trap the warmth and humidity of the air inside it so plants can flourish. Farm animals produce a huge amount of the greenhouse gasses required for our planet to trap the suns warmth.
