Melanin is a pigment found in your skin and hair cells that gives each its color. ... When sun shines on your skin, it destroys the melanin as well. But since your skin is alive, it can respond to the sun's damage. Your skin cells make more melanin and your skin becomes darker
D) help them complete the task
I would to be a good person
Explanation:
3 joint association system circulatory system are platelets, pulmonary, systemic system because males & females have a 4 chambered heart system
malnutrition stems from 3rd world countries that can not produce sustainable foods such as corn, beans, rice, which all require rain & moisture. In africa, rain is scarce. In turn, crops dont grow or thrive under these conditions.
The heart is located in the upper pulmonary system between the lungs where it can gather the necessary O2 to continue life of patient. in turn, the associated cells can transport O2 throughout all the cells in the body of all mammals.
weight of the heart in male; is 289.6
weight for females is 285.1.
reason being size difference in the 2 sexes...
Answer:
50 to 100 times each minute.
Explanation:
During activity or excitement, your body needs more oxygen-rich blood; the heart rate rises to well over 100 beats per minute. Medications and some medical conditions may affect how fast your heart-rate is at rest and with exercise
