The major focus of conservation biology is a. to prevent cruelty to animals b. to keep animals in zoos for people to see c. protect species from extinction d. stop hunting  

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!

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