Because of us and other cells from plants and Animals
Answer:
x=170
The question is asking you to add them together to get your unknown number
Thermal energy:
About to submit this quiz ill comment if I'm wrong
Yeah it uses some valuable scientific vocabulary and background knowledge, I hope this hypothesis will be good enough for your teacher (don't worry it will be)
The low-mass elements, hydrogen and helium, were produced in the hot, dense conditions of the birth of the universe itself. The birth, life, and death of a star is described in terms of nuclear reactions. The chemical elements that make up the matter we observe throughout the universe were created in these reactions.
