Which two elements make up the main structure of an organic compound? A. Carbon and oxygen
B. Nitrogen and oxygen
C. Carbon and hydrogen
D. hydrogen and sulfur

Calcium chloride +gold(1) oxide—>

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!