Distinguish the difference between physical change or chemical change.
Should be C.
Answer:
the waves have a trough
Explanation:
just took the test on edg.
Uses of nonmetals in our daily life: Oxygen which is 21% by volume helps in the respiration process.
Nonmetals used in fertilizers: Fertilizers contain nitrogen.
Nonmetals used in crackers: Sulphur and phosphorus are used in fireworks.