What are riparian buffers?
A.
secondary crops planted in fields when the primary crop is ripe
B.
secondary crops planted in fields after harvesting
C.
vegetation planted on ridges built along field borders
D.
vegetation planted at the edges of water channels
E.
vegetation planted on earthen embankments on slope

the index of refraction of the second medium is higher. i just took the test trust me !

blue

light-years

magnitude

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.