Answer:
That is true.
Explanation:
Osteoporosis promotes bone loss and people who suffer from this disease are more prone to fractures, especially in dangerous places like the hips and spine. Although some factors that promote this disease cannot be avoided, such as the genetic factor, osteoporosis can be prevented and even avoided with adequate intake of calcium, which is one of the main elements of bone mass. However, it is incorrect to say that only calcium intake is sufficient to prevent osteoporosis, as it is necessary to combine food with constant physical activity, which is capable of strengthening and promoting density to the bones.
Answer:
The correct answer is carbon dioxide.
Explanation:
Respiration (physical) process involves inhalation and exhalation of oxygen and carbon dioxide respectively in between the air and into the lungs to the blood. If the brain receptors sense the excess amount of carbon dioxide in the blood, they send signals the body to promote ventilation. So, the most important chemical regulator of respiration is carbon dioxide that determines the respiratory rate.
An increase in carbon dioxide concentration in blood results in a decreasing pH level of the blood, causing the person to increase his rate of ventilation.
Thus, the correct answer is carbon dioxide.
Answer:
The correct option is: b. by peristaltic contractions of the ureters.
Explanation:
Ureters are the long tubes that connects each kidney to the urinary bladder.
The urine is passed into the ureters from the kidneys and then the muscles present in the walls of the ureters contract and pass the urine into the bladder. This process is called peristalsis.
Therefore, the urine is transported to the bladder by the peristaltic contractions of the ureters.
