I think the answer is (C). I hope this helps! :)
A Bay Where The River Empties Into The Sea
Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm. Bacteria can do this through several mechanisms.
The collection of organisms and their nonliving surroundings that functions as a unit is called ecosystem. There are two kinds of ecosystem:
- Aquatic ecosystems (ecosystems dependent on water)
- Terrestrial ecosystems are those found on land.
Biomes are broad classifications of terrestrial ecosystems based chiefly on climate. Tropical rain forests, savannas, deserts, coniferous forests, and tundra are a few examples of nonliving surroundings in terrestrial biomes. According to the definition of an aquatic ecosystem, it is a water-based environment. Aquatic environments are of two types: marine ecosystems and freshwater ecosystems. The organisms included different fish species, crayfish, turtles and sharks etc.
To learn more about nonliving surroundings click here
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