It flowers at night so the precious fluid will not go to waste and evaporate. Since few animals move around during the day, it does this so that way it can attract the most pollinators (bats).
<span>The baseball and the bat are colliding head-on in a relatively elastic situation; by contrast, crumpling cars are inelastic. In the example of a person catching a water balloon, the catcher is moving in the same direction as the balloon, thus reducing momentum change.</span>
A qanat is a system of water irrigation, using wells and a underground pipeway connecting them to a local water table, ancient cultures were able to readily collect water from their wells.
