A vein in a leaf has what important function? a. forming a venation pattern
b. supporting the leaf blade
c. permitting guttation
d. controlling the opening of stomata

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

What is the problem in this article? what solution does the article propose?