Phenol red is used as the indicator for the Urea Medium because the indicator detects the formation of ammonia caused by the hydrolysis of urea done by the bacteria. Bromothymol blue is used in Simmons Citrate Agar because it effectively indicates the formation of carbonates formed by the consumption of citrate.
Answer:
antibiotics
Explanation:
pesticides have to do with nature and killing bugs, weeds, etc. Irrigation has to do with watering plants and people. Trucks are vehicles that transport. Antiobiotics help kill bad bacteria in your body when your sick, so that's health related.
<em>The term</em><em> geotropism</em><em> describes how plants respond to gravity. </em>
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so, an example of something that might not be a substrate is the animal itself.
explanation
substrate is the surface of where living animals, live.
sorry if this doesnt help.
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