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.)

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.