Why are a variety of instruments needed to measure change in the climate system? a. a different type of instrument is needed for each different climate. b. the climate system involves a number of different factors that are measured differently. c. climate is determined over a number of years, rather than a short period of time. d. different areas have developed different instruments to measure climate change.

I think the correct answer from the choices listed above is option B. A variety of instruments needed to measure change in the climate system because the climate system involves a number of different factors that are measured differently. There are a number of factors that affect climate and cannot be measured by one single instrument. 

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Europe needs to build a trump-like wall that will spread across europe making it impossible for migrants to cross they need to spread pig guts all over this wall so the muslims will never consider crossing into europe..you might be asking "can't they just fly over with planes? " well yes they can so we will install thaad missile protections system to shoot down any aircraft that violates europe's air fourth would be to start a fourth reich in germany.. last but not least.. make europe great again!