Each year, about 1.2 million cases of skin cancer are reported worldwide. an increased exposure to environmental conditions is a major link to the increase in cases. based on this information, which is the best conclusion? limiting exposure to the sun may reduce the chance of skin cancer. limiting exposure to the sun may increase the chance of skin cancer. increasing exposure to the sun may reduce the chance of skin cancer. increasing exposure to the sun will not affect the chance of skin cancer.

The right answer is Limiting exposure to the sun may reduce the chance of skin cancer.

If ultraviolet B (UVB) radiation is largely responsible for the harmful effects of the sun, it should protect itself also UVA, recognized mutagen

Main risk factor for skin cancer: overexposure of childhood before the age of 15 years.

Increased holiday time, search for sunny destinations, development of outdoor sports, aesthetics of tanning: in recent decades, we have increased and dangerously modified our "consumption" of sun. While the amount of ultraviolet (UV) radiation required for our biological balance is much lower than that to which we expose ourselves!

The intermittent nature of the exposure, with alternation, white skin in winter, tanned skin in summer, is also a risk factor by increasing the impact of UVA and UVB.

Finally, tanning under a UVA lamp or sunbath is a high-risk practice. 50 to 70% of skin cancers are thus directly linked to overexposure to UVA / UVB rays. In total, 80,000 new carcinomas and 11,200 new cases of melanoma are diagnosed each year in France. And the incidence of melanoma, the most serious form of skin cancer, doubles every 10 years in white-skinned populations.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.