If you have choices, it would be really helpful if you'd include them with your question, but I'd say
More than half of the forests in the Czech Republic have been destroyed by pollution.
Subsoil: This layer has normally less organic matter than the A horizon, so its colour is mainly derived from iron oxides. Iron oxides and clay minerals accumulate as a result of weathering. In a soil, where substances move down from the topsoil, this is the layer, where they accumulate.
Note: This information has been taken out of a website.
Natural cracks in the rock that form due to the exhumation of deeply buried rock are called salt wedges.
Answer: Option 1
<u>Explanation:
</u>
The process of exhumation in the discipline of Geography refers to digging up of a buried rock due to natural forces applied on the surface under which the rock is buried. At a salt wedge, a river flowing with a great velocity meets the ocean where the ocean is comparatively calm.
The fast-flowing river water acts as a digging force and carries out the process of exhumation of the rocks at the wedge. The same fast-flowing water creates cracks in the exhumed rocks.