Which of the following causes tornadoesa. wind shearb. stationary frontsc. dry climatesd. condensation

The correct answer is option A, Wind Shear

Explanation:

The tornadoes are formed from the fast rotating air which develops into a funnel shape. This is the reason why tornadoes usually occur during the thunderstorm in a cumulonimbus cloud when the wind direction and speed changes at high altitude thereby producing horizontal air swirl.  Swirling air takes the shape of funnel and finally touches the base of the ground to become a tornado.

the fossil record provides evidence of a common ancestor to many species.

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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