Answer:
just did the quiz on apex it's A stroma
Explanation:
D. Focusing
Sound waves reflected in flat surfaces like walls, floors and ceilings results to uneven dispersion of sounds by creating locations with high intensity and another with low intensity. This process is called Focusing and can be undesirable in auditoriums.
B obviously .................
In order for a chemical reaction to being, two reactants must come into contact with one another. Reactions<span> occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules</span>
Antibiotics are, initially, molecules naturally synthesized by microorganisms to fight against bacteria competing with their environment. This created a pressure of selection on the bacterial populations, leading to the appearance of resistant strains. In fact, when an antibiotic is used, only bacteria with defense systems against this molecule survive (and reproduce).
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