As CO2 concentration increases in this graph, how is average global temperature affected?

increases as well

Explanation:

carbon dioxide and other greenhouse gases contribute to the effects of global warming

i think its y= -4x-14

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds