Answer:
Poverty
Explanation:
The other factors are uncontrollable such as age (which continues to evolve with time), climate (which changes independently of man), and vaccination is a means of prevention against disease and not a factor. of risk.
In poor countries, we continue to die from diseases that have almost disappeared from rich countries. 1. million people a year, or diseases of lack of health infrastructure, such as diarrhoea that kills 1.8 million people (mostly young children) annually. AIDS is also ravaging (2.8 million deaths) and the epidemic requires considerable effort. Many other diseases receive much less attention, so every year, malaria kills 1.3 million people.
Answer:
20.9 percent
Around 78% of the air is nitrogen gas, and only 20.9% is oxygen.
Explanation:
20.9 percent
Around 78% of the air is nitrogen gas, and only 20.9% is oxygen.
Hope this helps.
Answer:The respiratory and circulatory systems bring oxygen and nutrients to the cells. The respiratory and circulatory systems work together to maintain homeostasis. The respiratory system moves gases into and out of the blood. The lungs contain the bronchi, bronchioles, and alveoli.
Explanation:
After you finish a hard workout, your top priority should be to:
a. replace the fluids lost by sweating.
