What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully