Answer:
China, Russia, Kazakhastan, Mexico, Nimibia, Greenland, South Africa, Canada, Australia
Answer: A, B, and C are correct.
Polar attractions are (a) forces between atoms of partial charges.(b) weaker than covalent bond.(c) they are numerous.
Explanation:
Polar attractions take place between atoms with partial charges. They are weaker than covalent bond and numerous of them occur in the living cells. They can form between H and other electronegative atoms like oxygen provided they have strong partial charges.
When it comes to supporting a population, food is one of the big factors. As the population grows, it becomes harder and harder to sustain the demand.
Crossing over is essential for the normal segregation of chromosomes during meiosis. Crossing over also accounts for genetic variation, because due to the swapping of genetic material during crossing over, the chromatids held together by the centromere are no longer identical.
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