Definition: This is the separation of a mixture by passing it through a medium (such as a silica column, filter paper, or gel) in which the components move at different rates.
Example: Examples of this include those using paper or those using of gel

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acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;