decay - v. to be slowly destroyed by natural processes; to be slowly broken down by the natural processes that destroy a dead plant or body

solar - adj. of or relating to the sun

tent - n. a portable shelter that is used outdoors and is held up with poles and ropes

preserve - v. to keep (something) in its original state or in good condition

rack - n. a frame or stand that has shelves, hooks, slots, etc., in which or on which you place things

innovation - n. a new idea, device, or method

access - n. a way of being able to use or get something

kiln - n. an oven or furnace that is used for hardening, burning, or drying something