Number 3, CA cannot be an element, because it has 2 capital letters, meaning it contains 2 elements
Answer: It is the indiscriminate dumping of nonuseful substances into water bodies
Explanation:
Water pollution occurs when non-useful substances like chemical, industrial, human wastes etc, are dumped into water bodies (oceans, rivers, lakes) as a means of disposing such wastes
For instance: water pollution occurs when unused battery is drop in the lake, sewage is dumped in the river etc
The Haber process converts nitrogen gas into ammonia<span> used in fertilizers. </span>Ammonia<span>is converted to nitrates by nitrifying </span>bacteria in the soil<span>. Plants absorb nitrates from the </span>soil<span> and use these to build up proteins. The plant may be eaten by an animal, and its biomass used to </span>produce<span> animal protein.</span>
Heterogeneous, because you can take out or sort the ingredients in all three into separate parts
