1 Select the correct answer from each drop-down menu.
А ___
Is scientific knowledge established through direct observation and remains constant. Scientific knowledge can change
when scientists

thats a little if u want the answer just look it up on google thats what i do haha : )

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

there are two significant figures.