When sound waves hit a solid surface they either reflect, refract, or absorb.
Echo's are caused by the reflection of sound waves.
Answer:
D
Explanation:
Because water vapour is a gas and evaporation is the process of turning a liquid into a gas so the water which is the liquid turns into water vapour the gas
Pure and accurately labeled.
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The correct answer for this question would be option C. The statement that best describes the difference in how water and glucose can move across a plasma membrane is this: <span>Water enters and leaves by osmosis, while glucose requires facilitated diffusion. Hope this answer helps.</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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