Teens need protein for many reasons, including building and repairing muscles, promoting hair and skin health, fighting off infections and carrying oxygen in the blood. Proteins also help with building enzymes, hormones and vitamins, especially important for adolescents. Proteins are made up of building blocks called amino acids, most of which your body can naturally produce. However, there are nine essential amino acids that your body cannot make, but that you can get through foods you eat. It is important for teenagers to consume a variety of proteins so their bodies get proper nutrients for growth and development.
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Answer:
a process used by plants to convert sunlight to energy
Answer:
When the Earth Rotates on its axis.
Explanation:
That is how the whole day/night cycle on earth progresses, is by the earth rotating on its axis. None of the others would work.
Answer:
1. The respiratory system allows us to breathe . They bring oxygen into our body and remove carbon dioxide from the body .
2. Tiny hairs called cilia protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.
3. The throat (pharynx and larynx) is a ring-like muscular tube that acts as the passageway for air, food and liquid. It is located behind the nose and mouth and connects the mouth (oral cavity) and nose to the breathing passages (trachea [windpipe] and lungs) and the esophagus (eating tube).
4. The main function of the epiglottis is to seal off the windpipe during eating, so that food is not accidentally inhaled.
5. The heart pumps blood to the lungs for oxygenation and the lungs then give the heart back oxygen rich blood to be transmitted to the whole body
Explanation:
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