Charges is then there is a negative sign at the right corner of an element it means you have to add, and when it is positive, it means you have to substract
Answer:
it's urine option ( C ) .
This might help you hope so
Explanation:
Lime is added to lower the acidity of lakes when pH levels go too low.
Acidic environment is harmful to aquatic ecosystems. Acidity causes some minerals, such as phosphorus and calcium, in the water to become unavailable to aquatic organisms like plants and fishes ( This means the water hardness is reduced). The low nutrients cause stress and death in the aquatic environment lowering biodiversity. Applying lime raises the pH to neutral levels and improves the health of the aquatic life in the lake. This also improves economic activities in the lake like fishing.
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For more on acidicity of lakes check out;
brainly.com/question/3612253
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Answer:
The shape of a molecule is mostly determined by repulsion among the pairs of electrons around a central atom.
