Answer:
Some bacteria have mutated and are not killed by the penicillin
Explanation:
D. gathered food was stored
Answer:
B. Stimuli
Explanation:
Stimuli: A thing or event that evokes a specific functional reaction in an organ or tissue
I hope this helped.
The top layer is most likely a layer of lipids.
Lipids and water form two layers because of the nature (hydrophobic) of lipids. Lipids are biomolecules that do not mix with water. Lipids can be solubile in organic solvents, such as chloroform, but they are insolubile in water.