Sample bias. It is a bias in that happens when a sample is collected in such a way that some members of the intended population are less likely to be included than others.
Answer: 11
Explanation:
The mass number is given at the top left of the elements symbol, for example, sodium has a mass number of 23. We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11
las plantas crean oxígeno que hace funcionar a todos los organismos vivos. que establece que si no creamos dióxido carbono, ellos sufrirán.
Identify the warning signs of back pain caused by poor ergonomics and posture
Keep the body in alignment while sitting in an office chair and while standing
Get up and move
Use posture-friendly props and ergonomic office chairs when sitting
https://www.spine-health.com/wellness/ergonomics/ten-tips-improving-posture-and-ergonomics
Hope this helps!