Explain how the nucleus Observed in cheek cell

Orion the hunter is known for two navigational stars. which pair of stars are they?

Volcanic irruption is most likely to be violent when a) volcanoes near to the sea b) the neck of the volcano is sealed by a plug c) the lava is viscous d) the lava reaches the surface through a fissure e) the volcano is on the ocean floor

Why does less erosion & more deposition take place on the outside bank of a meander?