Pictured here is a flower common in New Orleans called black-jack (Bidens pilosa). Pollinators like bees and wasps are attracted to their white petals and their seeds catch onto the fur of animals or the shoe laces of people.
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What specialized structures increase the probability of successful survival and reproduction for the blackjack flower? (Explain how these structures will help the flower survive and
reproduce.)

Determine the time of the day and month of the year at which the peak sensible cooling load occurs for a top floor, north-eastern corner room of an office building in durban for the following conditions: floor area: 8 x 8 x 3 m east and north walls: 115 mm face brick (outside), 20 mm air space, 115 mm ordinary brick (inside) with 15 mm plaster roof construction: suspended plasterboard ceiling, 450 mm air space, 150 mm concrete, 75mm screed, waterproofing no heat transfer across other surfaces window area 3x 1,5 m high in north wall only. ordinary glass with venetian blinds. lights and occupants : from 07: 00 to 18: 00 average light density: 25 w/m2 number of occupants : 5 seated, light office work room temperature 24°c