A i hope that helped i love you guys have a great day
And merry chrismas
Answer:
6 elements.
Explanation:
99.9% by weight of most living things is made of the six elements: hydrogen, carbon, nitrogen, oxygen, phosphorus, and sulfur (backwards using just the letter abbreviations this spells SPONCH).
A rod of a neutron-absorbing substance used to vary the output power of a nuclear reactor.
It’s number 3 : decomposition and melting
