Which of the following is the first concrete evidence hazardous materials are present? O Senses
O Markings and color
O Container shape
O Placards and labels

Placards and labels

Explanation:

By checking labels you can identify if hazardous material is present or not.

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explanation:

idk

[ answer ]

foliated

[ explanation ]

foliation forms in a rock when pressure squeezes the rock together. the rock then has a design of many different color little lines. there are three types of foliated rock. the types are slate, schist, and gneiss. each type of foliated rock is different based on grain size and foliation characteristics. the lines appear when the rock has been under pressure.

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