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Answer:
The correct answer is "Darwin's theory of evolution is based on the premise of survival of the fittest; antibiotic-resistant microorganisms are selected by overuse of antibiotics".
Explanation:
Darwin's theory of evolution states that advantageous traits in living beings are selected under the premise of survival of the fittest, where the living beings with the advantageous traits are more likely to survive and reproduce. Darwin's theory of evolution explains the spread of antibiotic-resistant microorganisms, because resistance to antibiotics is an advantageous trait for microorganisms that are constantly in contact with antibiotics. The irresponsibly use of antibiotics leads to the spread of antibiotic-resistant microorganisms, because microorganisms that are naturally resistant to antibiotics are constantly selected and can reproduce and prosper.
Algae are photosynthetic, but they are also unicellular organisms (Euglena) and shares some of the common features with plants as well as animals. They move like animals and perform photosynthesis like plants. Therefore, they are classified into Protists, and not the Algae. Their most features resemble the non-photosynthetic protozoa, and not plants, and therefore, are put into the Protista.
They also lack a cell wall, which is a feature of plants.
Some scientists advocate their classification in plants because of their sexual mode of reproductiona, and formation of spores.
