Answer:
1. Litter is not only ugly but also harmful to animals in national parks.
Step-by-step explanation:
Option number one is the least important piece of evidence in Younqique's essay because it is not giving information about how garbage and not recycling can affect the oceans. The statement is talking about animals in general and not giving specific evidence about how animals in the sea are affected. The other options are relevant because they inform about the benefits of recycling and the negative impact that the accumulation of garbage in oceans has, encouraging us to recycle.