What hazard do you think this safety symbol represents?

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.

Ineed the answer to question 1 , i’m desperate

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?