X^n = a
x^2 = 16
Square root of 16 = 4
The root is 4
Answer:
3 both sides
Step-by-step explanation:
<h3>
Answer: D) It is affected by tides.</h3>
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Explanation:
An estuary is where a river pours into the ocean. So that means fresh water mixes with salt water here. This allows us to rule out choices A and B.
According to NOAA, their site says "Estuaries are one of the most productive ecosystems in the world, so there is a great diversity of animals and plants that live there". In other words, a lot of plants and animals live here, so we can rule out choice C.
Choice D is the answer because tides do affect estuaries. This is simply because the ocean is pretty much right next to it, or attached to it. So it's expected that a high tide would cause the water level in an estuary to increase.
I think it's the second one, 3 1/3
