Rice grows well in  soil.

Which of these is not true about weathering?

(i) Deforestation is used to prevent weathering.

(ii) Roots of trees get into crevices and force the rocks to break.

(iii) Difference in temperature causes the breaking up of rocks.

(iv) Weathering is caused by the construction of roads.

Which of the following statements does not refer to topsoil?

(i) It has no nutrients.

(ii) Plants grow in this layer.

(iii) Most living organisms are present in this layer.

(iv) It is a very hard layer.