Eating Vitamin D enriched foods, Infancy , pregnancy increases calcium absorption.
Oxalic acid in spinach, Having a high fiber diet rich in phytic acid, being over 70 years old can decrease calcium absorption.
Why is Calcium absorption important?
It's crucial to have enough calcium in the blood that carries nutrients to the bones in order to avoid the loss of bone mass. Although milk and other dairy products are a great source of calcium, as we become older, our bodies require more calcium. Because many people stop consuming calcium-rich foods or beverages, like whole milk, due to dietary concerns, a calcium-rich dietary supplement is crucial. A daily calcium requirement of 1,200 mg is necessary for older persons.
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Answer: Fishing, Overfishing is a huge problem depleting the amount of fish.
Explanation: swimming does no harm, agriculture is not in water and boating is not as big as a problem of fishing.
<u>Answer:</u>
Continuous pumping of water causes drawdown. The water table lowers rapidly.
<u>Explanation:</u>
- Water table is the level below which the ground is saturated with water.
- During rainfall the runoff water percolates into the ground through the gap in the soil particles and the water table is recharged.
- But when gallons of water are pumped continuously it leads to a drastic reduction in the water table because, water from the surrounding aquifers move towards the place where the vacuum is created by pumping.
- To prevent this, the groundwater should be recharged and over drawing should be avoided.
<span>The answer is sympatric
speciation. This is differentiated from allopatric speciation that involves the
divergence of a species due to the separation of parts of the population by a
geographical feature (such as a valley of the mountain). In sympatric
speciation, the divergence may be due to behavioral and reproductive isolation
within the population</span>
