Which of these is an example of physical weathering? a. iron in igneous rock rusting b. plant roots splitting rock c. students tearing paper d. acid rain breaking down rock

it is B) plant roots splitting rock

Explanation:

A plant that grows up through rock can split the rock as the roots grow and expand. Therefore, plant roots splitting rock is the best example of physical weathering.Students tearing paper is an example of a physical change, but it is isn't an example of weathering. Weathering causes changes to the Earth's surface. The other choices are examples of chemical weathering.

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supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes