Once during mitosis and twice during meiosis.
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The nucleus always contains one or more protons.
No, polar bears does not migrate.
<span>If a population is not in Hardy-Weinberg equilibrium that can cause deviations from expectation depending on the assumptions of HW that are violated. If a population violates some of the assumptions (like mutations, migrations and selection) the allele frequencies will change over time. Also, if a non-random mating occurs (like inbreeding), it will cause an increase in homozygosity for all genes.</span>
Answer:
Energy sustainability can best be achieved by using the renewable resources.
The renewable resources are the resources like water, wind and sun that can be renewed again and again after it is consumed once.
The term sustainability can be defined as the resources that can be used in the present generation and can be saved for the future generations as well.
So, sustainability can be best achieved when renewable resources are used.