Water pollution happens (1)

----- Nội dung dịch tự động từ ảnh -----
Water pollution happens (1),
as lakes, rivers, oceans and so on, getting dissolved in them, lying suspended in the water
or depositing on the bed. This degrades the quality of water. Not (2)
spell disaster for aquatic ecosystems, the pollutants also seep through and reach the
groundwater, which might end up in our households as contaminated water we use in our
daily activities, including drinking.
toxic substances enter water bodies such
does this
Water pollution can be (3)
polluting being city sewage and industrial waste discharge. Indirect sources
(4)
or groundwater systems and from the atmosphere via rain. Soils and groundwater contain
the residue of human agricultural practices and also improperly disposed of industrial
in a number of ways, one of the most
water pollution include contaminants that enter the water supply from soils
wastes.
Pollutants can be of varying kinds: organic, inorganic, radioactive and so on. In fact, the
list of possible water contaminants is just too vast to be listed here.
1. A. what
C. why
C. well
B. when
D. while
2. A. both
B. only
D. either
3. A. cause
B. caused
C. causing
D. causes
4. A. of
В. in
С. at
D. for