Alkaline earth metals
Group 13 aka the boron family is categorized as alkaline earth metals
Answer:
Bacteria
Explanation:
If you look up what Bacteria it will tell you it causes disease and germs which is the root or main source of algae
I am not really sure about the city, but if we look at the country, its BORDERS would be the same analogy for the cell membrane. I am saying this because cities dont really have a border .
