Sand dunes that form scalloped rows of sand at right angles to the wind are called

star dunes
parabolic dunes
barchanoid dunes
transverse dunes

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.

the following sets of characteristics describe what we know about the outer plants is c. rocky surface, closet to the sun and larger in size