The correct answer is opt-in-e-mail
Following the basic rules in this area, for a company to send email marketing campaigns it is necessary that it has a qualified contact base and that it is "opt in". This means that all people who are included in the mailing lists have authorized the receipt of emails with communications, newsletters and / or promotions from that company.
Explanation:
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Answer:
Coastal Plain based on its location near the Atlantic Ocean means access to a variety of humus and rainfall which helps to provide plants with this basic necessity thereby boosting Agricultural productivity.
The Coastal plains can also be used as a farming site and is also important as a port site in the movement of goods through the waterways which boosts the economy of the region.
Trade flourished because these progressing empires were developing new ways to produce products and utilize agriculture in their areas, such as Han with silk and Rome with olives and fishing/seafaring. These empires has never had access to goods that were from other areas before the Silk road, causing trade to become immensely popular and relied upon.
It’s B, Dangerous air pollution
