Examlex
An Earth satellite is simply a projectile
Gratification
Gratification is the pleasure or satisfaction obtained from achieving something desired or fulfilling a need.
Delay of Gratification
The ability to resist the temptation for an immediate reward and wait for a later reward.
Food Rewards
Incentives, often edible, used to motivate or reinforce desired behavior in both humans and animals.
Demographic Statistics
Data that relates to the structure of populations, such as age, race, gender, income, and education.
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