Provide solutions for the following questions: a) (i) List three causes of genetic variation. a) (ii) Describe two effects of genetic variation. b) (i) Explain trade winds and storms. b) (ii) How do y

Here are the solutions to your questions:

a) (i) Three causes of genetic variation in human population are:

• Mutation: Random changes in the DNA sequence.
• Gene flow: The transfer of genetic material from one population to another.
• Sexual reproduction: The recombination of genes through processes like crossing over, independent assortment of chromosomes during meiosis, and random fertilization.

a) (ii) Two ways in which genetic variation affects organisms are:

• It provides the raw material for natural selection, allowing populations to adapt to changing environments over time.
• It contributes to the diversity of traits within a species, which can lead to different levels of fitness or susceptibility to diseases among individuals.

b) (i) Explanation of terms associated with air movement:

• (α) Trade winds: These are prevailing easterly surface winds that blow from the subtropical high-pressure belts towards the equator in both the Northern and Southern Hemispheres. They are consistent and were historically important for sailing ships.
• (β) Storm: A storm is a violent disturbance of the atmosphere characterized by strong winds, and often accompanied by rain, thunder, lightning, or snow. It represents a significant deviation from average weather conditions.

b) (ii) To find out how far the storm would reach, we use the formula: distance = speed $\times$ time.