Answer:B
Explanation:
These are pathogens found in every one but are being fought off by the immune system....Individuals with low immune are immediately attacked by the pathogens
Answer:
The recommendations are: 1) coordinate employment, food rationing, salaries, bonuses, health treatment, age and condition of retirement, preschool care and education with family planning programs, maintain the elderly's living standard, and give preference to childless and single child families; 2) educate people about
Explanation:
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