The correct answers are 2. arid climate and 4. oil resources
The climate always causes environmental climate, especially arid one, while oil both extraction and production creates environmental problems.
Answer: D. Add water features to private gardens.
Renewable resources are those which can be replenished after one or subsequent uses. Examples include oxygen, fresh water, solar energy and biomass. Adding water features to private gardens can be a mode of replenishing freshwater. A system which can absorb the water which is being supplied to plants in the garden through soil and collect this water as a reservoir in the form of groundwater.
C is correct i believe i think all the others are wrong but im not entirely sure