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.
Korea explanation:there is still alot of controversy going on about korea and japan because of this reason
Scientists attribute soil formation to the following factors: Parent material, climate, biota (organisms), topography and time. ... The physical, chemical and biological properties of the different soils can have a big effect on how to best manage them.
The earth's orbit is responcible
French population changed due to immigration
