They might not no how to use the equipment
Most generally speaking, the arrows in the food webs/chains represent the flow of energy.
Most typically, the energy will flow from the Sun to the plants, and then those plants are eaten and when they are eaten the energy flows from the plants to whatever animal ate them.
A toxic biological substance or disease-causing organism that is hazardous to the health of people is a biohazard.
1- ingestion
2- inhalation
3- contact
4- physical trauma or broken skin
He should not attempt to carry it on his head.
