Scenario #3 In the year 2850, humans successfully colonized Mars. The Martian modules that were constructed could
hold only a small population of people. It is now a century later, and the population on Mars has grown to
600 people. Of the current Mars population, 45 people express the recessive phenotype for phenylketon-
uria (PKU) syndrome (ppgenotype).
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p-
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d. the weight of the book

lipid

explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project