You should check if you friend have oral herpes aand if he does them go to the octor
Answer:
in controlled experiment an independent variable is systematically manupulated and dependent variable is measured ; any extraneous variables are controlled
Myocardial infarction, the medical term for heart attack, literally means "heart tissue damage or death.". Heart attacks most commonly occur when one or more of the coronary arteries — a network of blood vessels that supply blood to the heart — become blocked. Heart muscle becomes starved for oxygen and nutrients.
This is heavily disputed, and honestly, it varies on a person-by-person basis. Some people are visual learners (so it's effective for them to use videos and pictures to help them study), some prefer being hands-on, etc...
Generally though, I'd say the most effective method that works for most people is through visceralisation. This is the process of associating concepts, words. phrases etc. with your different senses (sound, touch, images...). You can read up more on it by searching up "visceralisation for studying".
The answer for that question is b
