Answer:
Hydrogen bonds
Explanation:
Water is a polar molecule containing hydrogen.
the third one that says
evolution of populations over time
Meiosis: cell division into four daughter cells (each has half the number of chromosome of the parent cell)
mitosis: cell division that results in two daughter cells (each has the same number and type of chromosomes as the parent cell)
It is Gravity.
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If they live in a river, they would most likely need fins (to swim) and gills (to breathe under water)
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