Answer: make systematic observations and carefully collect relevant evidence.Then they use logical reasoning and some imagination to develop hypotheses and explanations.
//Give thanks if helpful :)//
Explanation:
Multifactorial disorder
Multifactorial disorders are
disorders that involve variations in multiple genes joined with environmental
causes. Diseases such as heart disease, type 2 diabetes, and obesity are multifactorial
disorder as they do not have single genetic cause but are caused by a
combination of environmental factors and life style with mutations in multiple
genes.
Yes it can kill brain cells. if you hold your breath for a short amount of time example 10 seconds it won't do any harm. but if you hold your breath for an extended time like a minute the cells will not get enough oxygen and eventually die. I hope I helped you
