Which of these resources is renewable?
A: wind

Which of these is a safe practice in a laboratory investigation when working with chemicals?
A: wearing safety goggles when working with chemicals

The iron in iron-rich red soils may not be in a form that can be taken up by tree roots. As a result, leaves and needles may look yellow. Some trees release acids that convert iron in soil to a usable form. This change in soil chemistry is a type of which process?
A: weathering

Minerals can be identified using hardness, streak, and cleavage because
A:
minerals have different recognizable properties.