Question

1. Deforestation.......

to soil erosion.
a. have contributed

b. be contributed
c. has contributed
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Answer 1

Respuesta:

según yo seria la respuesta C) has contributed

Explicación:

Answer 2

Respuesta:

c. has contributed  

Explicación:

1. Deforestation....... to soil erosion.

a. have contributed

b. be contributed

c. has contributed     ( has porque deforestación es singular " it " )

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