Please help me if you know help me with 2 and 3 please

2.)how much a certain area can hold is carrying compacity

3>)if a disease killed most of the producers the species would have a chance of dying out

Explanation:

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