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. 

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust.