I think the answer is 20 but I am not sure,I heard about 15 and 25
<span>A mastaba is a type of ancient Egyptian tomb in the form of a flat-roofed, rectangular structure with inward sloping sides, constructed out of mud-bricks or stone.</span>
A skeletal frame constructed in a regular pattern to support the floors, roof, or walls. A steel frame is made up of vertical steel columns and horizontal I-beams
A. 2-3 weeks.
Explanation: If they are stored in favorable conditions before planting, once they are in a vase, the life span increases drastically. They can last 23 days (average) or 2-3 weeks.
