85% of adults are grandparents by age 65. This estimation has been made in the U.S. from the surveying of the elderly. So, the correct choice is the third option: 85.
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- Dotz
They are involved in a chemical digestion.
Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. It begins in the mouth when food mixes with saliva which contains enzyme salivary amylase that breaks down carbohydrates. It also occurs in the stomach where HCl and pepsin forms chyme and small intestine especially in the duodenum.
1. Sunlight warms the surface and water evaporates.
2. Warm, moist layer builds up between 1000 and 5000 feet.
3. Rising air currents organize into “thermals”
4. Water vapor in rising air parcels condenses to form clouds.
Per calendar year (365 days) there are 31536000 seconds
