Com a crise política econômica no sistema socialista soviético, agravada na década de 1980, vários movimentos separatistas ganharam força no leste europeu. caracterize as mudanças ocorridas e d? sua opini? o sobre o tema

the answer is b. apsidal precession

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.

answer they showed that organic molecules such as amino acids could be produced from inoragnic molecules;