PLSSSA HELPPP Why does the author include this paragraph in the article?
А- to emphasize the urgent threats to biodiversity
on Earth
B- to illustrate that humans are able to create
solutions to the threats to biodiversity
С-to contrast the rate of die-off happening to
certain modern species with that of the
dinosaurs
D- to demonstrate the effects of the loss of
biodiversity on historical ecoystems

Maybe you should spell please correctly first

I think it's c

Explanation:

im not really big and smart on ela and stuff or history but I think it's c. correct me if I'm wrong

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