Under what conditions would you expect abrasion to cause the most erosion on a beach?

Its in the national history museum and you can't se the original because its locked away in a vault 

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

Bcold,less-dense air falls

True. all the continents were once together, but they began to move apart as time went on.