Because of the rain shadow effect, a dry region occurs on the downside of a mountain.
Option: A
<u>Explanation:</u>
In orographic rainfall, mountain acts as barrier and moisture laden wind get an obstacle in its path in the form of that mountain and cause rainfall in the windward sides of the hills (mountain) and create rain shadow region in the lee ward sides of the hills (mountain).
Because when moisture laden winds reach that side all the moisture in the winds dries up. For e.g. eastern part of western ghat mountain in the Peninsular India is an example of rain shadow region.
Answer: Online retailing
Explanation: Online retailing or what is called electronic tailing (e-tailing) is nothing but online sales where someone can sell services and goods, intellectual property, etc. It is a matter of retailing like when you go to a store and buy something for your needs, only this is done electronically here, i.e. through online shopping. Online retailing can take place between a seller and a buyer, or also between two sellers or two businesses, known as B2B.
The correct answer is letter d. mountain men.
Mountain men are described as <span>explorers or adventurers, who dwells </span>inside the wilderness<span>. Mountain men </span>have been most common within the Rocky Mountains in North America <span>from </span>approximately<span> 1810 and throughou</span><span>t the </span>1880s.