I'm pretty sure the answer is B. Invest in alternative energy sources that do not burn fossil fuels. The reason I would pick B is because in Antarctica the ice is melting more and more over time because, cars and factors etc are burning fuels which result in more damage to the ozone layer.
The strands are suppose to be exactly same when replication is complete, so you would not be able to tell the difference.
Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. Hope this helps!
Answer:
B. Cells are composed of many parts.
Explanation:
Not all cells of living beings have organelles ("the parts"). Only Eukaryotes have organelles, unlike prokaryotes (Bacteria and Archaea)
