Making sure there are no poisonous gasses entering your lungs by covering your mouth and nose
Hola
Explanation:
Hola cómo estás amigos de brainless los quiero mucho ay los vemos son unos tarados
Answer:
A repeated-measures design
Explanation:
This is a research design that is used to measure the same variables repeatedly on the same sample or subject over a given time frame or over different time periods and/or under various conditions.
