Answer:
b.
They can convert the sun's energy into food.
Hazardous materials are grouped into classes identifying their similarities in composition and structure.
<h3>Why hazardous materials are grouped into classes?</h3>
The hazardous materials are grouped into classes in order to tell us about the severity of hazard and it is done on the basis of similarity in composition.
So we can conclude that hazardous materials are grouped into classes identifying their similarities in composition and structure.
Learn more about hazardous here: brainly.com/question/7310653
1st one is Science and the 2nd one is Bias
Answer:
lower mantle
Explanation:
because the core and the crust are solid.