Answer:
i think 1 is either b or d
Explanation:
Its b. Ecosystem
Population is the number of a species in an area, it has nothing to do with physical characteristics.
Abiotic is just an adjective meaning not alive
Competition is just the interactions between organisms in the struggle for food, water, space, mates, and many other things again not physical characteristics
Scientists find most deep-ocean trenches in the Pacific. Example being the Mariana Trench.
<span>the conversion process of inorganic carbon (carbon dioxide) to organic compounds by living organisms. The most prominent example is photosynthesis where plants turn carbon dioxide into oxygen and water.</span>
