We should care because a lot of the factors such as population expansion, urbanization, pollution and climate change that cause water scarcity are broadening and becoming more complex and uncontrollable. (Para.5)
A、We should care about water problem because the factors like population expansion, urbanization, pollution and climate change are broadening and becoming more complex and uncontrollable, which makes water shortage a bigger problem for many places.
B、We should care because a lot of the factors such as population expansion, urbanization, pollution and climate change lead to water scarcity, therefore water problem is broadening and becoming more complex and uncontrollable.
A、We should care about water problem because the factors like population expansion, urbanization, pollution and climate change are broadening and becoming more complex and uncontrollable, which makes water shortage a bigger problem for many places.
B、We should care because a lot of the factors such as population expansion, urbanization, pollution and climate change lead to water scarcity, therefore water problem is broadening and becoming more complex and uncontrollable.