Structures—like jetties, groins, and breakwaters—that are designed to prevent beach erosion a. have the added benefit of allowing organic coasts to develop. b. must be built in conjunction with beach nourishment. c. are a temporary solution that decreases the rate of beach erosion. d. are permanent solutions that protect erosional beaches.

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Answer// dinosaurs emerged during mesozoic era;

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Answerencourage alternative timber sources,increase public awareness of the forests,increase research into forestry,involve local communities in forest projectsalso one of the main initiatives of the 1977 act was to introduce a new approach to forest management known as selective management system, this is recognised as one of the most sustainable approaches to tropical forestry management in the world