15 points ! no guessing
a watershed is the land that water flows across or through on its way to a stream, lake, wetland, or other body of water. how do scientists recommend preserving a watershed?
a.
encourage agricultural usage in the watershed
b.
preserve forests and wetlands within the watershed
c.
create lakes by damming up rivers in the watershed
d.
increase construction within the watershed

Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction