In which of these environments is wind erosion a large concern? the desertthe open oceantropical rainforestcoral reefs

The desert.
Since the desert is made of sand, wind erosion can move deserts or parts of them entirely.

1. Topographic map is the type of map that best shows differences in elevation. The correct option among all the options that are given in the question is the last option or option "D".

2. VLBI equipment is the equipment that receives radio waves from space objects such as quasars. The correct option among the options given is option "C".