human factors are littering pollution in water or air. Non human factors are glaciers melting away and falling erosion or weathering
The <span>type of gland that can become blocked and form a blackhead is: Sebaceous
Sebaceous funcion's is to lubricate and waterproof the skin and hair of mammals with an oily substance.
Sometimes, this oily substance could block the pores of your skin, which caused the dirt to gathered in that pores and forming a blackhead.</span>
Vitamin a
vitamin d
vitamin e
vitamin k
Answer:
Daily physical activity helps to prevent osteoporosis and osteoarthritis
Explanation:
Osteoporosis is a disease caused by the loss of bone density, making bones fragile and more likely to break, while arthritis can be defined as the inflammation of the joints, which may be caused by the breaking of the bones. The most severe type of arthritis is osteoarthritis. Physical exercise helps to slow the rate of bone loss, thereby it is possible to prevent bone diseases such as osteoporosis and osteoarthritis by making regular physical activity, reducing thus the risk of bone fractures. Moreover, physical activity may also help to maintain muscles that work together with the bones to support every movement. It is also important to highlight that healthy food habits such as, for example, adequate daily consumption of vitamin D and calcium can also help to prevent bone loss.