Answer:
A
Explanation:
Based on the word choice and structure of the sentence, A gives off the most positive connotation upon reading out of all of your choices.
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Question 3 is a scientific question because it can be experimented and answered by science.
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They take place in the cytoplasm
<span>The correct answer is d. increase the rate of breathing.</span>
<span>
Peripheral chemoreceptors (the carotid and aortic bodies) can sense hypercapnia (high CO2) and then they send a signal to the breathing centre. Breathing centre is in medulla oblongata which regulates breathing movements. When CO2 reaches a certain level, a signal is sent to trigger an inhalation and the rate of breathing is increased.</span>
They are the primary producers
