(37)
hydrogen peroxide naturally decomposes into water and oxygen very slowly. manganese dioxide can be added to hydrogen peroxide to lower the activation energy of the decomposition. what type of substance is manganese dioxide?

a. a product
b. a catalyst
c. a converter
d. an inhibitor

The horse latitudes-high-pressure zones about 30 degrees north and 30 degrees south of the equator.-warm air traveling away from the equator cools and sinks-weather tends to be clear and drythe doldrums-low-pressure near equator-air rises and spreads out toward the poles-rising moist air produces clouds and heavy rainthe westerlies-blow from the west-move from the horse latitudes toward the poles.-bring storms across much of the united statesthe tradewinds-blow from the east-move from the horse latitudes toward the equator  -strong, steady winds

10 is the . . .

The relationship of both of them