There are many human activities that could contribute significantly to the creation of dead zones, and here are some of them:
1. the use of chemical fertilizers
2. urban land use
3. coastal littering, as well as runoff from sewage
4. use of harmful phosphates in detergents
Dead zones are places in waters on Earth where there is so little oxygen left due to pollution that marine life cannot survive there.
Answer:
Explanation:
“Every time there is a waste burning activity, whether it is caused by humans or is a natural occurrence, it puts pollutants like carbon dioxide, mercury and acid into the atmosphere. These chemicals damage the environment and can cause a lot of different respiratory diseases,” Sothun says.
Insulin and glucagon are both enzymes that regulate the levels of sugar in the blood
Basic building block to all living organisms
have cell walls
