Which factors distinguish different aquatic ecosystems? Select four options. the temperature of the air
the temperature of the water
the amount of rainfall
the amount of sunlight
the amount of dissolved oxygen
the amount of dissolved salt

1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle

Which statement about this figure is false

Answer this asap. why did the americans go to china? a. trading b. exploration c. land d. live stock