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A is the ans for this question
If a bacterium cannot use citrate agar will not change its color (stays green). On the other hand, if bacteria have the ability to use citrate, the medium will change its color from green to blue.
This happens because citrate agar contains pH indicator such as bromothymol blue which transforms from green to blue in alkaline conditions.
The answer is, acquired traits are passed down from parent to offspring.
<span>C, Homeostasis is the quality of organisms that describes their ability to maintain internal conditions in a stable manner amid external conditions that change at certain times and periods. It is the way to keep in balance in environment and environment.</span>
