Answer:
Variation explains the difference in traits between all living organisms.
Explanation:
Without variation it would be pretty impossible to notice any "differences" in traits, especially between living organisms.
If both of those sexual partners are faithful to each other, and only have sexual relations with one another, then there isn't a high probability that either of them is going to get HIV. If they want to be sure, they should use protection, such as condoms, to prevent getting HIV through body fluids. And they should always be honest with each other in case one of them has that disease.
Because they take place at an atomic level and are unable to be seen by the human eye
Answer;
WHO
The WHO established guidelines for medical doctors conducting biomedical research involving human subjects.
Explanation;
-The World Health Organization (WHO) plays an essential role in the global governance of health and disease; due to its core global functions of establishing, monitoring and enforcing international norms and standards, and coordinating multiple actors toward common goals.
- The functions of WHO may be summed up as; to act as a directing and coordinating authority on international health work, to ensure valid and productive technical cooperation, and to promote research.