Here are the answers to your questions:
39. For six weeks, weather data was collected. Included in this data were temperature, barometric pressure, humidity, precipitation, and cloud cover. From this data, you would most likely be able to determine which of the following?
C relationship between temperature and humidity during the six weeks of data collection
Reasoning: The data collected includes both temperature and humidity, allowing for analysis of how the two variables relate to each other during that period.
40. A student gathers data on temperature, barometric pressure, rainfall, humidity, and cloud cover over a period of six weeks. Which of the following will the student most likely be able to determine from the data?
C the relationship between temperature and humidity during the six weeks
Reasoning: Similar to question 39, the data allows the student to analyze relationships among the various weather elements observed during the six weeks.
41. One of the most promising areas of research is the development of alternative fuel sources to power cars known as "hybrid vehicles." At high speeds, these vehicles are powered by a combustion engine. At low speeds, they are powered by an electric motor. These vehicles can be used as personal and commercial transportation in the same way normal automobiles are used. Change in this technology will most likely result in —
D lowered emissions of greenhouse gases
Reasoning: Hybrid vehicles are designed to be more fuel-efficient and use less fossil fuel, which generally leads to decreased greenhouse gas emissions compared to traditional combustion-only vehicles.
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