Biology, 30.01.2020 17:53 erinmarie19
The doppler effect means that an observer ahead of a train hears the train at a higher frequency sound than does any observer behind the train.
true or flase
Answers: 2
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What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream
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Nerve cells are specialized to respond to stimulitrue or false?
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Which statement is true for bacteria a. bacteria have complex internal structures b. all bacteria are spiral in shape c. all bacteria cause disease in animals d. bacteria break down some foods
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The doppler effect means that an observer ahead of a train hears the train at a higher frequency sou...
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