How does dividing species into kingdoms help us understand them? It helps us to see which animals existed first.
It helps us understand how animal organ systems work.
It helps us understand the differences and similarities among living things.
It helps us to predict which changes animals will make to adapt to their surroundings.

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

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.

what is the statement?