The last and sixth substage of Piaget's sensorimotor stage of cognitive development is: O secondary circular reactions.
O coordination of secondary schemes.
O mental combinations.
O tertiary circular reactions.

Wash your hands often and recycle your trash instead of just throwing it away.

Some of their responsibilities are to evaluate safety, efficiency, and effectiveness of the biomedical equipment. train people on how to properly operate biomedical equipment. lastly is to research the engineering aspects of the biological systems of humans and animals.