The right option is; D. waterfall
Waterfall is the feature that the Nacunday National Park is known for. Ñacunday National Park is a national park that is situated in Paraguay. Inside the Ñacunday National Park is a large waterfall known as Salto Ñacunday Waterfall which gives the park its uniqueness. The waterfall is the most important waterfall in the country and it is about 40 – 35 meters in height and 110 meters wide.
I believe it's River Valley's
I hope this helps
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Observation
An observation is information that is collected by using one of your 5 senses
They produce it during photosynthesis
It allows different kinds of organisms to be easily identified based on their characteristics.
