The answer is A. <span>effective length of the tube
In wind instrument, the effective length is not the actual length of the instrument but only the length that the finger holes manage to cover.
The more holes it managed to cover, the higher frequency of vibration it might able to produce, which lead to higher pitch of the instrument.</span>
Answer:
Answer:
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Primary consumers are those animals that depend on or they eat primary producers.
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Secondary consumers are those that eat mainly primary consumers.
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Explanation:
Primary Consumer: A primary consumer is an organism that directly eat primary producer ( plants). They are usually herbivores that eats autotrophic plants, autotrophic plants produce food through photosynthesis. Primary consumer are heterotrophic.
Example: Goat, cow and rabbit.
Secondary consumers: Secondary consumers depends mainly on primary consumers for their food requirement. Secondary consumers are carnivores as well as omnivores.
Example; Owls, bears, lions and humans etc.
The skin is cooled through evaporation.
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