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Biology - Questions & Answers 4

Why is it dangerous to talk while eating?
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If a person talks while eating, food may be inhaled into the lungs. Normally, after food is
swallowed, it passes into the pharynx and then into the esophagus. Food is prevented
from entering the larynx (the passageway to the lungs) by the epiglottis, a spadeshaped
cartilage flap that covers the pharynx. If food does enter the larynx, a cough
reflex is usually initiated, although food may lodge in the larynx, causing a blockage of
the airway.
| Anatomy , Facts |

Distinguish among the terms stimulus, sensation, and
perception

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all about photosynthesis

Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. This process occurs in plants and some algae (Kingdom Protista). Plants need only light energy, CO2, and H2O to make sugar. The process of photosynthesis takes place in the chloroplasts, specifically using chlorophyll, the green pigment involved in photosynthesis.

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Biology - Questions & Answers 3

Are there differences between the male and female
skeletons?

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Several general differences exist between the male and female skeletons. The male
skeleton is generally larger and heavier than the female skeleton. The bones of the skull
are generally more graceful and less angular in the female skeleton. A female also has
a wider, shorter breastbone and slimmer wrists. There are significant differences
between the pelvis of a female and a male, which are related to pregnancy and