Which factors influence the rock cycle and rock changes?
a. sunlight, wind speed, air pressure, climate
b. temperature, pressure, weathering, erosion
c. erosion, runoff, water pollution
d. temperature, precipitation, air pollution

B. Temperature, pressure, weathering, erosion

Explanation:

Although rocks seems so strong but they can be forced to change when their environmental conditions change. Weathering, cooling, melting, erosion, temperature, pressure, compaction, cementation are the factors that affect the formation and breakdown of rocks. There are mainly three types of rocks sedimentary, igneous and metamorphic. A rock can transform into another by passing through crystallization, metamorphism, erosion and sedimentation which creates the rock cycle.

cell regulation is conducted by special proteins.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.