The tree would contain carbon.
Answer:
Yep C, seems like the most reasonable answer to the question.
Answer:
II, III, IV, I
Explanation:
Blood pressure regulation is an example of negative feedback mechanism. When the blood pressure is low, sensor in the blood vessels called baroreceptors detect this and send a signal to the control center which is the hypothalamus.
The hypothalamus compares the current blood pressure with the normal and proceeds to send signals to the heart, as well as blood vessels and kidneys. The heart begins to beat faster, thereby increasing the heart rate and a a result, blood pressure goes back up to normal.
They live in places with little to no oxygen.
<span>Ultradian rhythm which is occuring 24 hours a day. There are different cycles in human body Ultradian rythm, circadian rythm and infradian rhythm. The sleep cycle occurs 24 hour a day. Such cycles are called Ultradian rhythm. Blood circulation, blinking etc are also exmples for Ultradian rhythms.</span>
