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Triennial
Triennial, from Latin "triennium".
It is meant to describe something occurring 4 times per year, or once per quarter. If you wanted to describe something occurring once every four years, you would say it is a quadrennial event.
Ovulation generally occurs between day 11 and day 21 of a woman's cycle.
The acetic acid cycle is the cycle that takes stores phosphorous and moves it into useful energy in the body. Every living thing uses this process millions of times a day. None of us would be alive without this cycle occurring constantly throughout each day. It occurs at the cellular level.
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Water cycle is a continuous process. It occurs every time.
Every part of the rock cycle is natural.
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then life would not exist on earth because every biological reaction and process is dependent on water
Enzymes are used in almost every biological reaction that takes place in an organism to expedite the process.
For humans, 28 days on average with menstruation ending on day 1 and ovulation occurring on day 14. But, every woman's cycle is different. Talk with your gynecologist for more information.
There are naturally occurring variations that affect climate and the cycles are different:The Eccentricity Cycle (Elliptical Cycle) - This occurs about every 100,000 years and is the longer cycle. It causes the earth to cool.The Obliquity Cycle (Axial Tilt) - 41,000 years. Increased obliquity can cause summers to be warmer and winters to be colder.The Precession Cycle (Wobble) - This cycle occurs every 26,000 years and can cause seasonal changes.
ATP [Adenosine Triphosphate ] is a energy giving universal molecule . It give energy to almost every biological process like Krebs cycle , photosynthesis ,Respiration etc .
Basically, it's the biochemical reaction/mechanism behind that process. For example, photosynthesis, the biochemical basis would be the actual chemical formula of all the reactants and products, the mechanism of creating the glucose molecules. Basically for every biological process there is a biochemical basis.
Biannual. Biannual can mean occurring every two years, OR occurring twice a year. Biennial, on the other hand, means only the former: occurring every two years.