Answer:
4
Explanation:
A nucleotide consists of a sugar molecule attached to a phosphate group and a nitrogenous base
Increased survival rates for those affected by Breast Cancer. Also, a union of community that raises awareness aka non profits that raise money from walks and marathons, etc. On another positive level - it has increased awareness of this cancer to the public via self screenings and breast cancer screenings via mammagrams thus resulting in earlier interventions that in turn increase survival rates.
The organ in the human body that can best be compared to the mitochondria in the cell is the digestive system.
<h3>What is mitochondria?</h3>
The mitochondria is the organelle found in the living cell that helps in the generation of the cell energy. This, it is also called the powerhouse of the cell.
The mitochondria has the ability to turn the energy gotten from food into the energy the body can use.
This can be likened to the digestive system because the digestive system has the ability to breakdown food particles into the form the body can use for energy.
Learn more about digestive system here:
brainly.com/question/956634
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Answer: <span>C, They add to its hardness.
</span>Calcium is naturally dissolved in water, it can be
found in water as Ca2+ ions and causes <span><span><span>water hardness.</span> C</span>omes from rocks
such as limestone, marble, calcite, dolomite, gypsum, fluorite and
apatite. It can also be a ph stabilizer.
</span>
Chemical A the other ones dont even exist