How are aquatic ecosystems classified?

1 answer:

3 0

There are three basic types of freshwater ecosystems: Lentic: slow moving water, including pools, ponds, and lakes. Lotic: faster moving water, for example streams and rivers. Wetlands: areas where the soil is saturated or inundated for at least part of the time.

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What is the mass of a rock lifted 2 meters off the ground that has 196 J of potential energy?

eimsori [14]

Answer:

10kg

Explanation:

Let PE=potential energy

PE=196J

g(gravitational force)=9.8m/s^2

h(change in height)=2m

m=?

PE=m*g*(change in h)

196=m*9.8*2

m=10kg

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Answer:

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aivan3 [116]

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Dmitrij [34]

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so here we can say

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