Answer:
it depends which part of the us you are talking about - and by ecosystems do you mean biomes
Explanation:
the us have these following ecosystem
-taiga , hot deserts, cold deserts, tropical dry forests, temperate deciduous forests etc
Answer: Waterfall, area where flowing river water drops abruptly and nearly vertically. Waterfalls represent major interruptions in river flow. Under most circumstances, rivers tend to smooth out irregularities in their flow by processes of erosion and deposition.
Explanation:
Answer:
Arctic Ocean and Northeast British Columbia, Canada
Explanation:
Answer: west
Explanation: hope this helps! ;)
