Which of these events happened during the 1980s?

Asnap is a three-dimensional form or a two dimensional form?

Carl is trying to remember the different words for a matrix created from metal and a mix matrix created from wood. what are these two matrices called

Liam is going to teach his sister's scout troop how to cook on a campfire before their next camping trip. which of the following would be best to use in his presentation? a.) a video demonstrating cooking techniques b.) a book of recipes to use while camping *explain your answer !