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pentagon [3]
3 years ago
11

Vocal sounds are: a.mechanical or b. electromagnetic

Biology
1 answer:
kicyunya [14]3 years ago
3 0

Answer:

Mark brainliest please

Explanation:

In order for the sound to be clear and not raspy or hoarse, the vocal folds must vibrate together symmetrically and regularly. So B

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If a scientist is observing biotic and abiotic factors, which of the following level of organism must she be studying?
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3 0
3 years ago
The EKG is hooked up, and Mr. M's trace looks very abnormal. His heart rate is low. The T wave, which indicates repolarization o
azamat

Answer:

This question lacks options, options are: Mr. M's cells are depolarizing too easily. Blocking Nat channels will make it harder for them to depolarize, bringing their sensitivity back to normal O Mr. M has too little K* leaving his cells, so we need to block the Nat channels so the Kt channels can stay open and his cells can repolarize properly. Mr. M has too little K* leaving his cells, so we need to block the Nat channels so the Na /K+ ATPase can move Kt out of the cell effectively O Blocking Na* channels cannot help- it will only make his cells fire less, and he already has a weak heartbeat. Mr. M's cells are not repolarizing properly. Blocking Nat channels will help them repolarize normally, bringing their resting potential back to normal.

The correct answer is ''Mr. M's cells are depolarizing too easily. Blocking Na+ channels will make it harder for them to depolarize, bringing their sensitivity back to normal.''

Explanation:

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6 0
3 years ago
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