Answer:
Explanation:
Matter can change form through physical and chemical changes, but through any of these changes matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.
I think its C. global warming
because the other one directly threats aquatic bio diversity while global warming doesn't just affect aquatic biodiversity
The right answer is: Bleeding oesophageal varices
Bleeding oesophageal varices occur when swollen veins (varicose veins) of the lower esophagus rupture and bleed.
Oesophageal varices may leak blood and eventually rupture. This can lead to serious bleeding and life-threatening complications, including death. When that happens, it's a medical emergency.
So she says without phosphates, people have to wash or rinse their dishes before they put them in the dishwasher, which wastes water. Or they run their dishwasher twice, which wastes electricity. ... That's what happened with laundry detergents after phosphates were removed from them years ago
